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Shared Circles including Klaus Seiersen

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Top posts in the last 50 posts

Most comments: 6

posted image

2014-04-29 17:31:59 (6 comments, 0 reshares, 6 +1s)Open 

Most reshares: 11

posted image

2014-05-24 09:38:13 (1 comments, 11 reshares, 47 +1s)Open 

One of the best xkcd comics and our favorite!

http://xkcd.com/612/

Most plusones: 47

posted image

2014-05-24 09:38:13 (1 comments, 11 reshares, 47 +1s)Open 

One of the best xkcd comics and our favorite!

http://xkcd.com/612/

Latest 50 posts

posted image

2015-07-21 07:28:13 (0 comments, 0 reshares, 2 +1s)Open 

SkySafari 4 for Android
I upgraded from version 1.8 to 4 of SkySafari, which I think is the best astronomy app for Android for reasons I told here https://goo.gl/79GUE1 I got SkySafari 4 Plus, an app of the SkySafari product line: https://play.google.com/store/apps/details?id=com.simulationcurriculum.skysafari4plus

What’s new
Although version 4 was completely rebuilt for Android and includes many changes and new features, if you are familiar with earlier versions you’ll notice a new user interface look based on the old one, as well as new artwork and app icons.

A nice new feature is animated meteor showers. Search for a shower and tap the Center button to get an animated view, as in this screenshot of the Perseids on my Nexus 6 phone.

Also of note are the new date and time dialog, which lets you go back or forward by thousands of years torep... more »

SkySafari 4 for Android
I upgraded from version 1.8 to 4 of SkySafari, which I think is the best astronomy app for Android for reasons I told here https://goo.gl/79GUE1 I got SkySafari 4 Plus, an app of the SkySafari product line: https://play.google.com/store/apps/details?id=com.simulationcurriculum.skysafari4plus

What’s new
Although version 4 was completely rebuilt for Android and includes many changes and new features, if you are familiar with earlier versions you’ll notice a new user interface look based on the old one, as well as new artwork and app icons.

A nice new feature is animated meteor showers. Search for a shower and tap the Center button to get an animated view, as in this screenshot of the Perseids on my Nexus 6 phone.

Also of note are the new date and time dialog, which lets you go back or forward by thousands of years to reproduce past or future astronomical events, and new horizon panoramas, such as the Mauna Kea observatory.

I’m not sure SkyWeek is new but it’s a really handy observing guide. The SkyWeek button in the main toolbar lets you view upcoming celestial phenomena in a list reported by Sky & Telescope magazine.

#Android #Astronomy___

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2015-06-13 09:48:23 (3 comments, 2 reshares, 11 +1s)Open 


Ceres' bright spots - a familiar comparison. Just sayin'...
#Ceres #astronomy #comparison  


Ceres' bright spots - a familiar comparison. Just sayin'...
#Ceres #astronomy #comparison  ___

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2015-05-18 19:31:00 (0 comments, 2 reshares, 4 +1s)Open 

Two Worlds, One Sun

There’s an image going around of a blue sunset on Mars. Yes, it’s a real image, and yes, the colors are reasonably true to life. It was taken by the Curiosity rover in April. Given that sunsets on Earth are typically red, how does Mars get a blue sunset? It all has to do with the way light scatters in the atmospheres of Earth and Mars.

Earth has a relatively thick atmosphere, so most of the atmospheric scattering occurs when light strikes a molecule of air, known as Rayleigh scattering. Rayleigh scattering occurs when the object a photon scatters off (the air molecule) is much smaller than the wavelength of the photon. The closer the wavelength is to the size of the molecule, the more likely it is to scatter. This means that red wavelengths (which are the longer wavelengths of visible light) don’t scatter with air molecules much, while blue wavelengths(whic... more »

Two Worlds, One Sun

There’s an image going around of a blue sunset on Mars. Yes, it’s a real image, and yes, the colors are reasonably true to life. It was taken by the Curiosity rover in April. Given that sunsets on Earth are typically red, how does Mars get a blue sunset? It all has to do with the way light scatters in the atmospheres of Earth and Mars.

Earth has a relatively thick atmosphere, so most of the atmospheric scattering occurs when light strikes a molecule of air, known as Rayleigh scattering. Rayleigh scattering occurs when the object a photon scatters off (the air molecule) is much smaller than the wavelength of the photon. The closer the wavelength is to the size of the molecule, the more likely it is to scatter. This means that red wavelengths (which are the longer wavelengths of visible light) don’t scatter with air molecules much, while blue wavelengths (which are shorter) tend to scatter a lot. In fact blue light is almost 10 times more likely to scatter against air molecules than red light. This is why the sky appears blue, since so much of the blue light is scattered.

When the Sun is low in the sky, it’s light has to travel a long path through the atmosphere to reach you. As the light travels through the atmosphere some of the photons are scattered off the air molecules. When the photons scatter off air molecules, they scatter randomly in all directions, so usually when a photon scatters, it scatters away from your line of sight. Since blue photons scatter much more often than red ones, much of the blue light is scattered away. This leaves red photons to reach your eye. Hence the Sun looks red when low in the sky. When the Sun is overhead, the path it takes to reach you is much shorter, so only a bit of the blue light is scattered. So the Sun looks yellow.

Mars has a much thinner atmosphere, so the amount of Rayleigh scattering is much less. But Mars also has a dry, dusty surface, and a weaker surface gravity, so the atmosphere of Mars is often filled with fine dust particles. These particles are more comparable in size to the wavelengths of visible light, so most of the light is scattered by Mie scattering. One of the main differences between Rayleigh and Mie scattering is that Rayleigh scattering tends to occur in all directions, but Mie scattering varies with scattering angle. What this means is that longer wavelengths (reds) tend to scatter more uniformly, while shorter wavelengths (blues) tend to scatter at slight angles. This means that blue light tends to be deflected less than red light. This means Mars can have a dusty red daytime sky, and a blue sunset.

Mie scattering does occur on Earth as well, but since Mie scattering is less efficient than Rayleigh scattering it’s never strong enough to give us a blue sunset. It can (rarely) produce a blue moon. The most widespread incidence of modern history occurred after the eruption of Krakatoa in 1883, which sent so much ash into the atmosphere it produced brilliantly red sunsets and visibly blue moons all across the globe for nearly two years. As a result, the phrase “once in a blue moon” came to mean a rare occurrence.___

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2015-05-18 19:30:12 (1 comments, 1 reshares, 5 +1s)Open 

Landmannalaugar
Landmannalaugar is a volcanic hotspot in the country’s southern highlands. Landmannalaugar is famous for the multi-coloured mountains caused by the interaction of rhyolite rock and geothermal gasses. It is tough to drive there, the road is tough for a car, but a jeep copes with the rough road much better.

#iceland #icelandphotography #volcanic #enjoyyourtime
http://icelandaurora.com/tours/landmannalaugar/

Landmannalaugar
Landmannalaugar is a volcanic hotspot in the country’s southern highlands. Landmannalaugar is famous for the multi-coloured mountains caused by the interaction of rhyolite rock and geothermal gasses. It is tough to drive there, the road is tough for a car, but a jeep copes with the rough road much better.

#iceland #icelandphotography #volcanic #enjoyyourtime
http://icelandaurora.com/tours/landmannalaugar/___

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2015-05-11 18:32:51 (0 comments, 1 reshares, 2 +1s)Open 

The Sky from Mauna Kea
Image Credit & Copyright: Shane Black Photography; Rollover Annotation: Judy Schmidt
http://apod.nasa.gov/apod/ap150511.html

What if you could stand at the top of a volcano and peer out across the universe? It the timing is right, you might see an amazing panorama like the one featured here. In this case, the volcano is the Hawaii's Mauna Kea, and the time was a clear night last summer In the foreground of this south-facing panorama lies a rugged landscape dotted with rocks and hardy plants. Slightly above and further out, a white blanket of clouds spreads horizontally to the horizon, seemingly dividing heaven and Earth. City lights illuminate the clouds and sky on the far left, while orange lava in the volcanic caldera of Kilauea lights up the clouds just left of center. The summit of an even more distant Hawaiian volcano, Mauna Loa, is visible in... more »

The Sky from Mauna Kea
Image Credit & Copyright: Shane Black Photography; Rollover Annotation: Judy Schmidt
http://apod.nasa.gov/apod/ap150511.html

What if you could stand at the top of a volcano and peer out across the universe? It the timing is right, you might see an amazing panorama like the one featured here. In this case, the volcano is the Hawaii's Mauna Kea, and the time was a clear night last summer In the foreground of this south-facing panorama lies a rugged landscape dotted with rocks and hardy plants. Slightly above and further out, a white blanket of clouds spreads horizontally to the horizon, seemingly dividing heaven and Earth. City lights illuminate the clouds and sky on the far left, while orange lava in the volcanic caldera of Kilauea lights up the clouds just left of center. The summit of an even more distant Hawaiian volcano, Mauna Loa, is visible in dark silhouette near the central horizon. Green airglow is visible above the clouds, caused by air molecules excited by the Sun during the day. The Moon is the bright orb on the right. A diffuse band of light-colored zodiacal light extends up from the far right. Most distant, the dramatic central band of our Milky Way Galaxy appears to rise vertically from Mauna Loa. The person who witnessed and captured this breathtaking panorama stands before you in the image center.___

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2015-03-21 20:37:42 (0 comments, 0 reshares, 5 +1s)Open 

Northern Equinox Eclipse
Image Credit & Copyright: Stan Honda
http://apod.nasa.gov/apod/ap150321.html

Snowy and cold is weather you might expect at the start of spring for Longyearbyen on the Arctic archipelago of Svalbard, Norway. But that turned out to be good weather for watching the Moon's umbral shadow race across northern planet Earth. The region was plunged into darkness for 3 minutes during the March 20 total solar eclipse while insulated eclipse chasers witnessed the dark Sun in the cold clear sky. In this well-timed snapshot captured near the end of totality, the Moon's shadow sweeps away from the horizon and the solar corona fades as the lunar disk just begins to uncover the Sun. Streaming past the Moon's edge, direct rays of sunlight create the fleeting appearance of a glistening diamond ring.

Northern Equinox Eclipse
Image Credit & Copyright: Stan Honda
http://apod.nasa.gov/apod/ap150321.html

Snowy and cold is weather you might expect at the start of spring for Longyearbyen on the Arctic archipelago of Svalbard, Norway. But that turned out to be good weather for watching the Moon's umbral shadow race across northern planet Earth. The region was plunged into darkness for 3 minutes during the March 20 total solar eclipse while insulated eclipse chasers witnessed the dark Sun in the cold clear sky. In this well-timed snapshot captured near the end of totality, the Moon's shadow sweeps away from the horizon and the solar corona fades as the lunar disk just begins to uncover the Sun. Streaming past the Moon's edge, direct rays of sunlight create the fleeting appearance of a glistening diamond ring.___

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2015-03-17 09:28:41 (0 comments, 4 reshares, 21 +1s)Open 

Aurora over Icelandic Glacier
Image Credit & Copyright: James Boardman Woodend (Images Inspired by Nature)
http://apod.nasa.gov/apod/ap150310.html

Several key conditions came together to create this award-winning shot. These included a dark night, few clouds, an epic auroral display, and a body of water that was both calm enough and unfrozen enough to show reflected stars. The featured skyscape of activity and serenity appeared over Iceland's Vatnajökull Glacier a year ago January, with the Jökulsárlón Iceberg Lagoon captured in the foreground. Aurora filled skies continue to be common near Earth's poles as our Sun, near Solar Maximum, continues to expel energetic clouds of plasma into the Solar System.

Aurora over Icelandic Glacier
Image Credit & Copyright: James Boardman Woodend (Images Inspired by Nature)
http://apod.nasa.gov/apod/ap150310.html

Several key conditions came together to create this award-winning shot. These included a dark night, few clouds, an epic auroral display, and a body of water that was both calm enough and unfrozen enough to show reflected stars. The featured skyscape of activity and serenity appeared over Iceland's Vatnajökull Glacier a year ago January, with the Jökulsárlón Iceberg Lagoon captured in the foreground. Aurora filled skies continue to be common near Earth's poles as our Sun, near Solar Maximum, continues to expel energetic clouds of plasma into the Solar System.___

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2015-03-17 09:28:34 (0 comments, 2 reshares, 10 +1s)Open 

Volcano of Fire Erupts Under the Stars
Image Credit & Copyright: Diego Rizzo
http://apod.nasa.gov/apod/ap150311.html

First, there was an unusual smell. Then there was a loud bang. But what appeared to the eye was the most amazing of all. While waiting near midnight to see a possible eruption of Volcán de Fuego (Volcano of Fire) in Guatemala last month, a ready camera captured this extraordinary image. Lava is seen running down the side of the volcano, while ash rises up, and glowing magma bubbles explode out of the caldera. Lights near the town of Escuintla can be seen in the background, one of several nearby towns that have witnessed several spectacular eruptions previously. High above, seemingly tranquil by comparison, are familiar stars from the night sky. Although the Volcán de Fuego usually undergoes low-level activity, when the next spectacular eruption will occur isu... more »

Volcano of Fire Erupts Under the Stars
Image Credit & Copyright: Diego Rizzo
http://apod.nasa.gov/apod/ap150311.html

First, there was an unusual smell. Then there was a loud bang. But what appeared to the eye was the most amazing of all. While waiting near midnight to see a possible eruption of Volcán de Fuego (Volcano of Fire) in Guatemala last month, a ready camera captured this extraordinary image. Lava is seen running down the side of the volcano, while ash rises up, and glowing magma bubbles explode out of the caldera. Lights near the town of Escuintla can be seen in the background, one of several nearby towns that have witnessed several spectacular eruptions previously. High above, seemingly tranquil by comparison, are familiar stars from the night sky. Although the Volcán de Fuego usually undergoes low-level activity, when the next spectacular eruption will occur is unknown.___

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2015-03-08 19:07:59 (0 comments, 0 reshares, 7 +1s)Open 

Astronomers using NASA’s Hubble Space Telescope have spotted for the first time a distant supernova split into four images. The multiple images of the exploding star are caused by the powerful gravity of a foreground elliptical galaxy embedded in a massive cluster of galaxies. This unique observation will help astronomers refine their estimates of the mass of dark matter in the lensing galaxy and cluster. Dark matter is an invisible form of matter that makes up most of the mass of the universe.

The gravity from both the elliptical galaxy and its galaxy cluster distorts and magnifies the light from the supernova behind it in an effect called gravitational lensing. First predicted by Albert Einstein, this effect is similar to a glass lens bending light to magnify and distort the image of an object behind it. The multiple images are arranged around the elliptical galaxy in a cross-shaped pattern,a... more »

Astronomers using NASA’s Hubble Space Telescope have spotted for the first time a distant supernova split into four images. The multiple images of the exploding star are caused by the powerful gravity of a foreground elliptical galaxy embedded in a massive cluster of galaxies. This unique observation will help astronomers refine their estimates of the mass of dark matter in the lensing galaxy and cluster. Dark matter is an invisible form of matter that makes up most of the mass of the universe.

The gravity from both the elliptical galaxy and its galaxy cluster distorts and magnifies the light from the supernova behind it in an effect called gravitational lensing. First predicted by Albert Einstein, this effect is similar to a glass lens bending light to magnify and distort the image of an object behind it. The multiple images are arranged around the elliptical galaxy in a cross-shaped pattern, also known an Einstein Cross.

The elliptical galaxy and its galaxy cluster, MACS J1149.6+2223, are 5 billion light-years away from Earth. The supernova behind it is 9.3 billion light-years away.

The image shows the galaxy's location within a hefty cluster of galaxies called MACS J1149.6+2223. Arrows (inset) point to the multiple copies of Supernova Refsdal. The four images were spotted on Nov. 11, 2014.

Image Credit: NASA/ESA/STScI/UCLA___

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2015-01-30 20:35:09 (0 comments, 0 reshares, 6 +1s)Open 

A Night at Poker Flat
Image Credit: +NASA / Jamie Adkins
http://apod.nasa.gov/apod/ap150130.html

Four NASA suborbital sounding rockets leapt into the night on January 26, from the University of Alaska's Poker Flat Research Range. This time lapse composite image follows all four launches of the small, multi-stage rockets to explore winter's mesmerizing, aurora-filled skies. During the exposures, stars trailed around the North Celestial Pole, high above the horizon at the site 30 miles north of Fairbanks, Alaska. Lidar, beams of pulsed green lasers, also left traces through the scene. Operating successfully, the payloads lofted were two Mesosphere-Lower Thermosphere Turbulence Experiments (M-TeX) and two Mesospheric Inversion-layer Stratified Turbulence (MIST) experiments, creating vapor trails at high altitudes to be tracked by ground-based observations.

A Night at Poker Flat
Image Credit: +NASA / Jamie Adkins
http://apod.nasa.gov/apod/ap150130.html

Four NASA suborbital sounding rockets leapt into the night on January 26, from the University of Alaska's Poker Flat Research Range. This time lapse composite image follows all four launches of the small, multi-stage rockets to explore winter's mesmerizing, aurora-filled skies. During the exposures, stars trailed around the North Celestial Pole, high above the horizon at the site 30 miles north of Fairbanks, Alaska. Lidar, beams of pulsed green lasers, also left traces through the scene. Operating successfully, the payloads lofted were two Mesosphere-Lower Thermosphere Turbulence Experiments (M-TeX) and two Mesospheric Inversion-layer Stratified Turbulence (MIST) experiments, creating vapor trails at high altitudes to be tracked by ground-based observations.___

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2015-01-14 19:34:37 (0 comments, 4 reshares, 16 +1s)Open 

Two to Tonga
Photograph by Fabrice Guerin,

Two to Tonga
Photograph by Fabrice Guerin,___

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2014-11-19 19:36:38 (0 comments, 4 reshares, 14 +1s)Open 

Milky Way over Monument Valley Navajo Tribal Park
[BML] http://asterisk.apod.com/viewtopic.php?f=29&t=34055&start=125
Copyright: César Cantú

Milky Way over Monument Valley Navajo Tribal Park
[BML] http://asterisk.apod.com/viewtopic.php?f=29&t=34055&start=125
Copyright: César Cantú___

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2014-11-19 19:35:14 (0 comments, 0 reshares, 7 +1s)Open 

Aurora Borealis, Northern Lights, Troms region, Norway

Photo by : Gavin Hellier

Aurora Borealis, Northern Lights, Troms region, Norway

Photo by : Gavin Hellier___

posted image

2014-10-28 20:56:56 (0 comments, 3 reshares, 26 +1s)Open 

China’s Lunar Test Spacecraft Takes Incredible Picture of Earth and Moon Together

The Chinese lunar test mission Chang’e 5T1 has sent back some amazing and unique views of the Moon’s far side, with the Earth joining in for a cameo in the image above. According to the crew at UnmannedSpaceflight.com the images were taken with the spacecraft’s solar array monitoring camera.

http://www.universetoday.com/115750/chinas-lunar-test-spacecraft-takes-incredible-picture-of-earth-and-moon-together/

China’s Lunar Test Spacecraft Takes Incredible Picture of Earth and Moon Together

The Chinese lunar test mission Chang’e 5T1 has sent back some amazing and unique views of the Moon’s far side, with the Earth joining in for a cameo in the image above. According to the crew at UnmannedSpaceflight.com the images were taken with the spacecraft’s solar array monitoring camera.

http://www.universetoday.com/115750/chinas-lunar-test-spacecraft-takes-incredible-picture-of-earth-and-moon-together/___

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2014-10-26 20:03:16 (0 comments, 0 reshares, 7 +1s)Open 

Great picture of the conjunction of the Crescent Moon and Saturn

⇒ On the 25 October 2014 occurred an occultation of Saturn by the Moon : a spectacular phenomenon.
⇒ A french amateur astronomer took a nice shot of the Moon-Saturn 's conjunction ...
--> Our article here : http://astrospace-page.blogspot.fr/2014/10/moon-saturn-conjunction.html

Credits Image : Sabri Klibi Grp Frs (+KLIBI Sabri 446 On Air)

#crescentmoon   #SaturnMoon  

Great picture of the conjunction of the Crescent Moon and Saturn

⇒ On the 25 October 2014 occurred an occultation of Saturn by the Moon : a spectacular phenomenon.
⇒ A french amateur astronomer took a nice shot of the Moon-Saturn 's conjunction ...
--> Our article here : http://astrospace-page.blogspot.fr/2014/10/moon-saturn-conjunction.html

Credits Image : Sabri Klibi Grp Frs (+KLIBI Sabri 446 On Air)

#crescentmoon   #SaturnMoon  ___

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2014-09-21 16:54:13 (2 comments, 6 reshares, 33 +1s)Open 

[PHOTO] Liftoff!! Falcon 9 lifts off from LC-40 at Cape Canaveral carrying Dragon to resupply the space station.

[PHOTO] Liftoff!! Falcon 9 lifts off from LC-40 at Cape Canaveral carrying Dragon to resupply the space station.___

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2014-09-18 15:16:26 (1 comments, 1 reshares, 9 +1s)Open 

Must see!

Must see!___

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2014-09-16 15:57:49 (0 comments, 1 reshares, 3 +1s)Open 

ESA astronaut +Andreas Mogensen is looking forward to flying to the International Space Station next year but until yesterday he was underwater trying out a handy new device he will use in space.

http://www.esa.int/Our_Activities/Human_Spaceflight/Astronauts/Hands-free_in_space_and_under_water

#NEEMO19 #mobiPV  

ESA astronaut +Andreas Mogensen is looking forward to flying to the International Space Station next year but until yesterday he was underwater trying out a handy new device he will use in space.

http://www.esa.int/Our_Activities/Human_Spaceflight/Astronauts/Hands-free_in_space_and_under_water

#NEEMO19 #mobiPV  ___

posted image

2014-09-15 19:32:40 (0 comments, 1 reshares, 15 +1s)Open 

62 Kilometers above Comet Churyumov-Gerasimenko
Image Credit: +European Space Agency, ESA / Rosetta / MPS for OSIRIS Team; MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA 
Additional Processing & Copyright: Elisabetta Bonora & Marco Faccin (Alive Universe Images)
http://apod.nasa.gov/apod/ap140915.html

Spacecraft Rosetta continues to approach, circle, and map Comet Churyumov-Gerasimenko. Crossing the inner Solar System for ten years to reach the vicinity of the comet last month, the robotic spacecraft continues to image the unusual double-lobed comet nucleus. The reconstructed-color image featured, taken about 10 days ago, indicates how dark this comet nucleus is. On the average, the comet's surface reflects only about four percent of impinging visible light, making it as dark as coal. Comet 67P/Churyumov–Gerasimenko spans about four kilometers in length and has asur... more »

62 Kilometers above Comet Churyumov-Gerasimenko
Image Credit: +European Space Agency, ESA / Rosetta / MPS for OSIRIS Team; MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA 
Additional Processing & Copyright: Elisabetta Bonora & Marco Faccin (Alive Universe Images)
http://apod.nasa.gov/apod/ap140915.html

Spacecraft Rosetta continues to approach, circle, and map Comet Churyumov-Gerasimenko. Crossing the inner Solar System for ten years to reach the vicinity of the comet last month, the robotic spacecraft continues to image the unusual double-lobed comet nucleus. The reconstructed-color image featured, taken about 10 days ago, indicates how dark this comet nucleus is. On the average, the comet's surface reflects only about four percent of impinging visible light, making it as dark as coal. Comet 67P/Churyumov–Gerasimenko spans about four kilometers in length and has a surface gravity so low that an astronaut could jump off of it. In about two months, Rosetta is scheduled to release the first probe ever to attempt a controlled landing on a comet's nucleus.___

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2014-09-14 18:46:26 (0 comments, 0 reshares, 0 +1s)Open 

Interesting list:

Top 20 Best Selling Science Books


http://www.nytimes.com/2014/09/09/science/best-selling-science-books.html

Interesting list:

Top 20 Best Selling Science Books


http://www.nytimes.com/2014/09/09/science/best-selling-science-books.html___

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2014-09-14 09:41:27 (0 comments, 3 reshares, 16 +1s)Open 

There's a reason Iceland is referred to as the land of fire and ice. The hot glow of the eruption from the Icelandic volcano Bardarbunga is seen underneath the cool and ethereal haze of the aurora borealis. #iceland   #aurora  

(Image credit: Gísli Dúa Hjörleifsson)

There's a reason Iceland is referred to as the land of fire and ice. The hot glow of the eruption from the Icelandic volcano Bardarbunga is seen underneath the cool and ethereal haze of the aurora borealis. #iceland   #aurora  

(Image credit: Gísli Dúa Hjörleifsson)___

posted image

2014-09-09 19:28:37 (2 comments, 2 reshares, 10 +1s)Open 

An Aurora Cupcake with a Milky Way Topping
Image Credit & Copyright: Göran Strand
http://apod.nasa.gov/apod/ap140909.html

This sky looked delicious. Double auroral ovals were captured above the town lights of Östersund, Sweden, last week. Pictured above, the green ovals occurred lower to the ground than violet aurora rays above, making the whole display look a bit like a cupcake. To top it off, far in the distance, the central band or our Milky Way Galaxy slants down from the upper left. The auroras were caused by our Sun ejecting plasma clouds into the Solar System just a few days before, ionized particles that subsequently impacted the magnetosphere of the Earth. Aurora displays may continue this week as an active sunspot group rotated into view just a few days ago.

An Aurora Cupcake with a Milky Way Topping
Image Credit & Copyright: Göran Strand
http://apod.nasa.gov/apod/ap140909.html

This sky looked delicious. Double auroral ovals were captured above the town lights of Östersund, Sweden, last week. Pictured above, the green ovals occurred lower to the ground than violet aurora rays above, making the whole display look a bit like a cupcake. To top it off, far in the distance, the central band or our Milky Way Galaxy slants down from the upper left. The auroras were caused by our Sun ejecting plasma clouds into the Solar System just a few days before, ionized particles that subsequently impacted the magnetosphere of the Earth. Aurora displays may continue this week as an active sunspot group rotated into view just a few days ago.___

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2014-09-05 18:34:07 (0 comments, 0 reshares, 6 +1s)Open 

A beautiful spiral galaxy in the constellation of Serpens, as seen by our +Hubble Space Telescope. Learn more : http://go.nasa.gov/1t8ZJHQ    

A beautiful spiral galaxy in the constellation of Serpens, as seen by our +Hubble Space Telescope. Learn more : http://go.nasa.gov/1t8ZJHQ    ___

posted image

2014-09-03 09:41:49 (0 comments, 2 reshares, 9 +1s)Open 

"Nightfall"
To learn more about astrophotography join my 500px group -  http://500px.com/groups/real-astrophotography 

Prints - www.HomeGroenPhotograhy.com

www.500px.com/AaronGroen

+Aaron J. Groen +HomeGroen Photography 
#milkyway   #real   #astrophotography   #waterfall   #cosmos   #stars   #galaxy  

 http://500px.com/photo/81927257/nightfall-by-aaron-j-groen

"Nightfall"
To learn more about astrophotography join my 500px group -  http://500px.com/groups/real-astrophotography 

Prints - www.HomeGroenPhotograhy.com

www.500px.com/AaronGroen

+Aaron J. Groen +HomeGroen Photography 
#milkyway   #real   #astrophotography   #waterfall   #cosmos   #stars   #galaxy  

 http://500px.com/photo/81927257/nightfall-by-aaron-j-groen___

posted image

2014-09-02 18:22:51 (1 comments, 0 reshares, 22 +1s)Open 

Fire in the Sky - Photography by +Greg Boratyn  www.eveningphotography.com Patriarch Grove, California, located 11,000 feet above sea level. #bristlecone #tree #milkyway

Fire in the Sky - Photography by +Greg Boratyn  www.eveningphotography.com Patriarch Grove, California, located 11,000 feet above sea level. #bristlecone #tree #milkyway___

posted image

2014-09-01 10:05:10 (0 comments, 3 reshares, 13 +1s)Open 

Space Shuttle and Space Station Photographed Together
Image Credit: +NASA
http://apod.nasa.gov/apod/ap140831.html

How was this picture taken? Usually, pictures of the shuttle, taken from space, are snapped from the space station. Commonly, pictures of the space station are snapped from the shuttle. How, then, can there be a picture of both the shuttle and the station together, taken from space? The answer is that during the Space Shuttle Endeavour's last trip to the International Space Station in 2011 May, a supply ship departed the station with astronauts that captured a series of rare views. The supply ship was the Russian Soyuz TMA-20 which landed in Kazakhstan later that day. The above spectacular image well captures the relative sizes of the station and docked shuttle. Far below, clouds of Earth are seen above a blue sea.

Space Shuttle and Space Station Photographed Together
Image Credit: +NASA
http://apod.nasa.gov/apod/ap140831.html

How was this picture taken? Usually, pictures of the shuttle, taken from space, are snapped from the space station. Commonly, pictures of the space station are snapped from the shuttle. How, then, can there be a picture of both the shuttle and the station together, taken from space? The answer is that during the Space Shuttle Endeavour's last trip to the International Space Station in 2011 May, a supply ship departed the station with astronauts that captured a series of rare views. The supply ship was the Russian Soyuz TMA-20 which landed in Kazakhstan later that day. The above spectacular image well captures the relative sizes of the station and docked shuttle. Far below, clouds of Earth are seen above a blue sea.___

posted image

2014-08-01 10:37:58 (2 comments, 6 reshares, 46 +1s)Open 


(Pac-Man) Auxiliary Telescope 2 - Atacama Desert (Chile)

http://space.io9.com/are-you-gonna-to-eat-that-1539663264


(Pac-Man) Auxiliary Telescope 2 - Atacama Desert (Chile)

http://space.io9.com/are-you-gonna-to-eat-that-1539663264___

posted image

2014-07-28 18:31:34 (0 comments, 0 reshares, 11 +1s)Open 

What's our new cover image?

Seen here is one of the more spectacular scenes of the Aurora Borealis that was photographed by one of the space station crew members aboard the International Space Station from an altitude of approximately 223 nautical miles. 

Image Credit: NASA

What's our new cover image?

Seen here is one of the more spectacular scenes of the Aurora Borealis that was photographed by one of the space station crew members aboard the International Space Station from an altitude of approximately 223 nautical miles. 

Image Credit: NASA___

posted image

2014-07-20 12:37:03 (3 comments, 5 reshares, 37 +1s)Open 

The Briksdal Glacier in Norway

More info of Wikipedia: http://en.wikipedia.org/wiki/Briksdalsbreen

___The Briksdal Glacier in Norway

More info of Wikipedia: http://en.wikipedia.org/wiki/Briksdalsbreen

posted image

2014-07-17 16:57:14 (0 comments, 0 reshares, 3 +1s)Open 

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posted image

2014-07-12 05:57:57 (0 comments, 6 reshares, 23 +1s)Open 

7 of the year's most stunning astronomy photos: http://trov.es/1mHPSb4

#photography   #astronomy  

(Image: Tommy Richardsen)

7 of the year's most stunning astronomy photos: http://trov.es/1mHPSb4

#photography   #astronomy  

(Image: Tommy Richardsen)___

posted image

2014-06-29 09:53:53 (1 comments, 0 reshares, 8 +1s)Open 

It's just like watching sir David Attenborough!

how animals eat their food___It's just like watching sir David Attenborough!

posted image

2014-06-19 18:32:51 (0 comments, 3 reshares, 13 +1s)Open 

Over the Top
Image Credit & Copyright: Luc Perrot
http://apod.nasa.gov/apod/ap140619.html

The central bulge of our Milky Way Galaxy rises above a sea of clouds in this ethereal scene. An echo of the Milky Way's dark dust lanes, the volcanic peak in foreground silhouette is on France's Réunion Island in the southern Indian Ocean. Taken in February, the photograph was voted the winner of the 2014 International Earth and Sky Photo Contest's Beauty of the Night Sky Category. This and other winning and noteable images from the contest were selected from over a thousand entries from 55 countries around planet Earth. Also featured in the contest compilation video (vimeo), the moving images are a testament to the importance and beauty of our world at night.

Over the Top
Image Credit & Copyright: Luc Perrot
http://apod.nasa.gov/apod/ap140619.html

The central bulge of our Milky Way Galaxy rises above a sea of clouds in this ethereal scene. An echo of the Milky Way's dark dust lanes, the volcanic peak in foreground silhouette is on France's Réunion Island in the southern Indian Ocean. Taken in February, the photograph was voted the winner of the 2014 International Earth and Sky Photo Contest's Beauty of the Night Sky Category. This and other winning and noteable images from the contest were selected from over a thousand entries from 55 countries around planet Earth. Also featured in the contest compilation video (vimeo), the moving images are a testament to the importance and beauty of our world at night.___

2014-06-19 14:18:24 (0 comments, 0 reshares, 2 +1s)Open 

TESLA Super Science Circle 2014 - June Edition!!!! : A quality circle curated carefully and tended since 2011. Who is in this circle?  people who are either involved in science, love science or are active on the Science on G+ community. Community link is here http://goo.gl/46uFH and the Page is +Science on G+!

Have you wondered where one can meet with like-minded people who love science and like to read about the real stuff? This is the ultimate SUL on science.... add and share to keep it alive.
--------------------------------------------------------------------------------------------------
Want to nominate someone? Please do so in comments. If you want to recommend something let us know. People who are notified are part of the circle.

#science #tesla #scienceongplus #scienceeveryday 

TESLA Super Science Circle 2014 - June Edition!!!! : A quality circle curated carefully and tended since 2011. Who is in this circle?  people who are either involved in science, love science or are active on the Science on G+ community. Community link is here http://goo.gl/46uFH and the Page is +Science on G+!

Have you wondered where one can meet with like-minded people who love science and like to read about the real stuff? This is the ultimate SUL on science.... add and share to keep it alive.
--------------------------------------------------------------------------------------------------
Want to nominate someone? Please do so in comments. If you want to recommend something let us know. People who are notified are part of the circle.

#science #tesla #scienceongplus #scienceeveryday ___

posted image

2014-06-18 10:33:24 (0 comments, 1 reshares, 5 +1s)Open 

Organise a special night for your astronomy club broadcast the #EELTblast event http://www.eso.org/public/announcements/ann14038/ http://ow.ly/i/5TNyb
Image credit: +European Southern Observatory

Organise a special night for your astronomy club broadcast the #EELTblast event http://www.eso.org/public/announcements/ann14038/ http://ow.ly/i/5TNyb
Image credit: +European Southern Observatory___

posted image

2014-06-18 10:33:13 (0 comments, 0 reshares, 1 +1s)Open 

Follow the dedicated hashtag #EELTblast for the latest updates on the E-ELT Groundbreaking event
Image credit: +European Southern Observatory/L. Calçada http://ow.ly/i/5TKef

Follow the dedicated hashtag #EELTblast for the latest updates on the E-ELT Groundbreaking event
Image credit: +European Southern Observatory/L. Calçada http://ow.ly/i/5TKef___

posted image

2014-06-11 18:36:15 (0 comments, 3 reshares, 9 +1s)Open 

Three Galaxies over New Zealand
Image Credit & Copyright: Mike Mackinven
http://apod.nasa.gov/apod/ap140611.html

No, radio dishes cannot broadcast galaxies. Although they can detect them, the above image features a photogenic superposition during a dark night in New Zealand about two weeks ago. As pictured above, the central part of our Milky Way Galaxy is seen rising to the east on the image left and arching high overhead. Beneath the Galactic arc and just above the horizon are the two brightest satellite galaxies of our Milky Way, with the Small Magellanic Cloud to the left and the Large Magellanic Cloud on the right. The radio dish is the Warkworth Satellite Station located just north of Auckland.

Three Galaxies over New Zealand
Image Credit & Copyright: Mike Mackinven
http://apod.nasa.gov/apod/ap140611.html

No, radio dishes cannot broadcast galaxies. Although they can detect them, the above image features a photogenic superposition during a dark night in New Zealand about two weeks ago. As pictured above, the central part of our Milky Way Galaxy is seen rising to the east on the image left and arching high overhead. Beneath the Galactic arc and just above the horizon are the two brightest satellite galaxies of our Milky Way, with the Small Magellanic Cloud to the left and the Large Magellanic Cloud on the right. The radio dish is the Warkworth Satellite Station located just north of Auckland.___

posted image

2014-06-10 18:04:56 (0 comments, 0 reshares, 0 +1s)Open 

Dianna Cowern ’11, a.k.a. +Physics Girl, has just won the Flame Challenge, an international contest hosted by actor/STEM advocate Alan Alda inviting scientists to create accurate, vivid answers to deceptively simple questions. Watch Cowern's winning video, "What is color?" below, then read her interview with the +MIT Alumni Association: http://mitsha.re/UraMRV

#scicomm   #sciart  

Dianna Cowern ’11, a.k.a. +Physics Girl, has just won the Flame Challenge, an international contest hosted by actor/STEM advocate Alan Alda inviting scientists to create accurate, vivid answers to deceptively simple questions. Watch Cowern's winning video, "What is color?" below, then read her interview with the +MIT Alumni Association: http://mitsha.re/UraMRV

#scicomm   #sciart  ___

posted image

2014-05-31 15:56:53 (0 comments, 1 reshares, 1 +1s)Open 

___

posted image

2014-05-31 12:03:46 (0 comments, 1 reshares, 9 +1s)Open 

Private rocket engine test going on right now in Copenhagen

#Heat2x  

Private rocket engine test going on right now in Copenhagen

#Heat2x  ___

posted image

2014-05-25 04:30:43 (1 comments, 1 reshares, 21 +1s)Open 

Camelopardalids and ISS
Image Credit & Copyright: Malcolm Park (North York Astronomical Association)
http://apod.nasa.gov/apod/ap140525.html

From a camp on the northern shores of the Great Lake Erie, three short bright meteor streaks were captured in this composited night skyscape. Recorded over the early morning hours of May 24, the meteors are illusive Camelopardalids. Their trails point back to the meteor shower's radiant near Polaris, in the large but faint constellation Camelopardalis the camel leopard, or in modern terms the Giraffe. While a few meteors did appear, the shower was not an active one as the Earth crossed through the predicted debris trail of periodic comet 209P/LINEAR. Of course, the long bright streak in the image did appear as predicted. Early on May 24, the International Space Station made a bright passage through northern skies.

Camelopardalids and ISS
Image Credit & Copyright: Malcolm Park (North York Astronomical Association)
http://apod.nasa.gov/apod/ap140525.html

From a camp on the northern shores of the Great Lake Erie, three short bright meteor streaks were captured in this composited night skyscape. Recorded over the early morning hours of May 24, the meteors are illusive Camelopardalids. Their trails point back to the meteor shower's radiant near Polaris, in the large but faint constellation Camelopardalis the camel leopard, or in modern terms the Giraffe. While a few meteors did appear, the shower was not an active one as the Earth crossed through the predicted debris trail of periodic comet 209P/LINEAR. Of course, the long bright streak in the image did appear as predicted. Early on May 24, the International Space Station made a bright passage through northern skies.___

posted image

2014-05-24 09:44:03 (0 comments, 1 reshares, 5 +1s)Open 

"The Light and The Lighthouse" by Ole C. Salomonsen
"Shot this yesterday outside of Tromso, nearby Skittenelv."

Canon 5D Mark II + Canon EF 24mm Mark II @1.4/ ISO2000 /3sec.
September 17, 2010

Credit: Photographer Ole C. Salomonsen
Ole's Website: http://www.arcticlightphoto.no

#Space #Astronomy #Earth #Norway #Tromsø #Skittenelv #Lighthouse #Night #Sky #Astrophotography #Norge #Art

"The Light and The Lighthouse" by Ole C. Salomonsen
"Shot this yesterday outside of Tromso, nearby Skittenelv."

Canon 5D Mark II + Canon EF 24mm Mark II @1.4/ ISO2000 /3sec.
September 17, 2010

Credit: Photographer Ole C. Salomonsen
Ole's Website: http://www.arcticlightphoto.no

#Space #Astronomy #Earth #Norway #Tromsø #Skittenelv #Lighthouse #Night #Sky #Astrophotography #Norge #Art___

posted image

2014-05-24 09:38:13 (1 comments, 11 reshares, 47 +1s)Open 

One of the best xkcd comics and our favorite!

http://xkcd.com/612/

One of the best xkcd comics and our favorite!

http://xkcd.com/612/___

posted image

2014-05-12 16:17:43 (2 comments, 1 reshares, 14 +1s)Open 

The pyro board is back!

Now with a selection of music.

The pyro board is back!

Now with a selection of music.___

posted image

2014-05-12 06:04:47 (0 comments, 0 reshares, 2 +1s)Open 

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posted image

2014-05-11 16:01:10 (0 comments, 0 reshares, 8 +1s)Open 

Eurovision 2014

Denmark took the Eurovision Song Contest 2014 to a new level with live sign language interpretation.

Enjoy.

Eurovision 2014

Denmark took the Eurovision Song Contest 2014 to a new level with live sign language interpretation.

Enjoy.___

posted image

2014-05-09 06:00:40 (0 comments, 2 reshares, 7 +1s)Open 

Halley Dust and Milky Way
Image Credit & Copyright: +Mike Taylor
http://apod.nasa.gov/apod/ap140509.html

The early morning hours of May 6 were moonless when grains of cosmic dust streaked through dark skies. Swept up as planet Earth plows through dusty debris streams left behind periodic Comet Halley, the annual meteor shower is known as the Eta Aquarids. This inspired exposure captures a meteor streak moving left right through the frame. Its trail points back across the arc of the Milky Way to the shower's radiant above the local horizon in the constellation Aquarius. Known for speed Eta Aquarid meteors move fast, entering the atmosphere at about 66 kilometers per second. Still waters of the small pond near Albion, Maine, USA reflect the starry scene and the orange glow of nearby artificial lights scattered by a low cloud bank. Of course, northern hemisphere skygazers... more »

Halley Dust and Milky Way
Image Credit & Copyright: +Mike Taylor
http://apod.nasa.gov/apod/ap140509.html

The early morning hours of May 6 were moonless when grains of cosmic dust streaked through dark skies. Swept up as planet Earth plows through dusty debris streams left behind periodic Comet Halley, the annual meteor shower is known as the Eta Aquarids. This inspired exposure captures a meteor streak moving left right through the frame. Its trail points back across the arc of the Milky Way to the shower's radiant above the local horizon in the constellation Aquarius. Known for speed Eta Aquarid meteors move fast, entering the atmosphere at about 66 kilometers per second. Still waters of the small pond near Albion, Maine, USA reflect the starry scene and the orange glow of nearby artificial lights scattered by a low cloud bank. Of course, northern hemisphere skygazers are expecting a new meteor shower on May 24, the Camelopardalids, caused by dust from periodic comet 209P/LINEAR.___

posted image

2014-04-29 17:31:59 (6 comments, 0 reshares, 6 +1s)Open 

___

posted image

2014-04-28 06:41:06 (0 comments, 0 reshares, 6 +1s)Open 

Black Hills Milky Way - Milky Way from the Black Hills of South Dakota, June 2012
http://500px.com/photo/68544785
http://www.facebook.com/dakotalapse

Black Hills Milky Way - Milky Way from the Black Hills of South Dakota, June 2012
http://500px.com/photo/68544785
http://www.facebook.com/dakotalapse___

posted image

2014-04-22 18:56:57 (0 comments, 0 reshares, 1 +1s)Open 

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