Eye on the Sky: Andromeda

February 12, 2013 at 12:00 am | Posted in Eye on the Sky, Eye on the Sky, Regular Feature, Science News | Leave a comment
Tags:

This image of Andromeda is via the Herschel Space Observatory (similar to the Hubble Space Telescope). Andromeda is the nearest major galaxy to our own, though still 2.5 million light years away.

Sensitive to the far-infrared light from cool dust mixed in with the gas, Herschel seeks out clouds of gas where stars are born. The new image reveals some of the very coldest dust in the galaxy — only a few tens of degrees above absolute zero — colored red in this image.

By comparison, warmer regions such as the densely populated central bulge, home to older stars, take on a blue appearance.

Intricate structure is present throughout the 200,000-light-year-wide galaxy with star-formation zones organized in spiral arms and at least five concentric rings, interspersed with dark gaps where star formation is absent.

Andromeda is host to several hundred billion stars. This new image of it clearly shows that many more stars will soon to spark into existence.

(via NASA)

Posted By: Skuldren for Roqoo Depot.

Eye on the Sky: When The Stars Stopped

February 5, 2013 at 7:29 am | Posted in Eye on the Sky, Eye on the Sky, Regular Feature, Science News | Leave a comment
Tags:

Whenever you wonder what all that money spent on NASA amounted to, just remember Hubble. It never ceases to provide a wealth of wonderful imagery, and a reminder of just how big existence is.

“The galaxy in this image, catalogued as 2MASX J09442693+0429569, marks a transitional phase in this process as young, star-forming galaxies settle to become massive, red and dead galaxies.

The galaxy has tail-like features extending from it, typical of a galaxy that has recently undergone a merger. Studying the properties of the light from this galaxy, astronomers see no sign of ongoing star formation; in other words, the merger triggered an event which has used up all the gas. However, the observations suggest that star formation was strong until the very recent past, and has ceased only within the last billion years. This image therefore shows a snapshot of the moment star formation stopped forever in a galaxy.”

(via NASA)

Posted By: Skuldren for Roqoo Depot.

Eye on the Sky: Star Births

December 18, 2012 at 11:05 am | Posted in Eye on the Sky, Regular Feature, Science News | Leave a comment
Tags:

Nursery

The Hubble Space Telescope captured this image of stars in the remnants of the gas cloud that birthed them.  3 million years ago the density of the internal knots in the gas cloud, collapsed and the stars were born.  While some of the stars were so massive they’ve already exploded in a supernova, the younger stars are so energized they create one of the largest clouds of hydrogen gas known.  This cluster is located in the galaxy M33.

Image Credit: NASA

(via NASA)

Eye on the Sky: Soyuz Re-Entry

December 11, 2012 at 10:39 am | Posted in Eye on the Sky, Regular Feature, Science News | Leave a comment
Tags:

Soyuz Rentry

View from the International Space Station as Expedition 33 begins it’s decent into Earth’s atmosphere.  Expedition 33 Commander Suni Williams and flight engineers Yuri Malenchenko and Aki Hoshide landed on the steppes of Kazakhstan on November 19, 2012.

(via Nasa)

Posted by Synlah for Roqoo Depot

Eye on the Sky: Galactic Bridge

November 27, 2012 at 2:31 pm | Posted in Eye on the Sky, Science News | Leave a comment
Tags:

Located a billion light years from earth this bridge composed of hot gas links two galaxy clusters.

Image credits: Sunyaev–Zel’dovich effect: ESA Planck Collaboration; optical image: STScI Digitized Sky Survey

(via NASA)

Posted by Synlah for Roqoo Depot

Eye on the Sky: Helix Nebula

October 9, 2012 at 11:23 am | Posted in Eye on the Sky, Regular Feature, Science News | Leave a comment
Tags:

“A dying star is throwing a cosmic tantrum in this combined image from NASA’s Spitzer Space Telescope and the Galaxy Evolution Explorer (GALEX), which NASA has lent to the California Institute of Technology in Pasadena. In death, the star’s dusty outer layers are unraveling into space, glowing from the intense ultraviolet radiation being pumped out by the hot stellar core.

This object, called the Helix nebula, lies 650 light-years away, in the constellation of Aquarius. Also known by the catalog number NGC 7293, it is a typical example of a class of objects called planetary nebulae. Discovered in the 18th century, these cosmic works of art were erroneously named for their resemblance to gas-giant planets.

Planetary nebulae are actually the remains of stars that once looked a lot like our sun. These stars spend most of their lives turning hydrogen into helium in massive runaway nuclear fusion reactions in their cores. In fact, this process of fusion provides all the light and heat that we get from our sun. Our sun will blossom into a planetary nebula when it dies in about five billion years.

When the hydrogen fuel for the fusion reaction runs out, the star turns to helium for a fuel source, burning it into an even heavier mix of carbon, nitrogen and oxygen. Eventually, the helium will also be exhausted, and the star dies, puffing off its outer gaseous layers and leaving behind the tiny, hot, dense core, called a white dwarf. The white dwarf is about the size of Earth, but has a mass very close to that of the original star; in fact, a teaspoon of a white dwarf would weigh as much as a few elephants!

The glow from planetary nebulae is particularly intriguing as it appears surprisingly similar across a broad swath of the spectrum, from ultraviolet to infrared. The Helix remains recognizable at any of these wavelengths, but the combination shown here highlights some subtle differences.

The intense ultraviolet radiation from the white dwarf heats up the expelled layers of gas, which shine brightly in the infrared. GALEX has picked out the ultraviolet light pouring out of this system, shown throughout the nebula in blue, while Spitzer has snagged the detailed infrared signature of the dust and gas in yellow A portion of the extended field beyond the nebula, which was not observed by Spitzer, is from NASA’s all-sky Wide-field Infrared Survey Explorer (WISE). The white dwarf star itself is a tiny white pinprick right at the center of the nebula.

The brighter purple circle in the very center is the combined ultraviolet and infrared glow of a dusty disk circling the white dwarf (the disk itself is too small to be resolved). This dust was most likely kicked up by comets that survived the death of their star.

Before the star died, its comets, and possibly planets, would have orbited the star in an orderly fashion. When the star ran out of hydrogen to burn, and blew off its outer layers, the icy bodies and outer planets would have been tossed about and into each other, kicking up an ongoing cosmic dust storm. Any inner planets in the system would have burned up or been swallowed as their dying star expanded.

Infrared data from Spitzer for the central nebula is rendered in green (wavelengths of 3.6 to 4.5 microns) and red (8 to 24 microns), with WISE data covering the outer areas in green (3.4 to 4.5 microns) and red (12 to 22 microns). Ultraviolet data from GALEX appears as blue (0.15 to 2.3 microns).” ~ NASA Website Image Gallery

Image Credit: NASA/JPL-Caltech

Posted by Synlah for Roqoo Depot

Eye on the Sky: When Galaxies Collide

October 2, 2012 at 12:57 pm | Posted in Astronomy, Eye on the Sky, Regular Feature, Science News | 1 Comment
Tags:

 “The Hubble Space Telescope shows a rare view of a pair of overlapping galaxies, called NGC 3314. The two galaxies look as if they are colliding, but they are actually separated by tens of millions of light-years, or about ten times the distance between our Milky Way and the neighboring Andromeda galaxy. The chance alignment of the two galaxies, as seen from Earth, gives a unique look at the silhouetted spiral arms in the closer face-on spiral, NGC 3314A.” ~ from the Nasa website.

Image Credit: NASA, ESA, the Hubble Heritage Team (STScI/AURA)-ESA/Hubble Collaboration, and W. Keel (University of Alabama)

Posted by Synlah for Roqoo Depot

Big Bang Science News

September 27, 2012 at 1:23 pm | Posted in Big Bang, Regular Feature, Science News | Leave a comment
Tags: , ,

A thousand year old religious icon, a Nazi SS expedition into Tibet, and a meteorite. Sounds like the latest installment in the Indiana Jones franchise, right? You aren’t far off. A small Buddhist statue, originally uncovered by a Nazi expedition to Tibet, has been analyzed by scientists and found to have been carved from a meteorite fragment.  From Red Orbit

Sounds like a Lucas fan’s dream story, right?  It’s true which makes it even more amazing.  Back in 1938, a Nazi led expedition discovered the statue and brought it back to Germany.  In 2007 it was finally available for study and that’s when scientist learned it was chiseled from a piece of the Chinga meteorite (it’s made of ataxite).  The Chinga meteorite crashed into parts of Mongolia and Siberia 15,000 years ago. Continue Reading Big Bang Science News…

Eye on the Sky: Supernova Shock Wave

September 25, 2012 at 10:34 am | Posted in Eye on the Sky, Regular Feature, Science News | Leave a comment
Tags: ,

Using observations from NASA’s Chandra X-ray Observatory, researchers have obtained the first X-ray evidence of a supernova shock wave breaking through a cocoon of gas surrounding the star that exploded. This discovery may help astronomers understand why some supernovas are much more powerful than others.

On Nov. 3, 2010, a supernova was discovered in the galaxy UGC 5189A, located about 160 million light years away. Using data from the All Sky Automated Survey telescope in Hawaii taken earlier, astronomers determined this supernova exploded in early October 2010.

This composite image of UGC 5189A shows X-ray data from Chandra in purple and optical data from Hubble Space Telescope in red, green and blue. SN 2010jl is the very bright X-ray source near the top of the galaxy.

NASA Website

Image Credit: X-ray: NASA/CXC/Royal Military College of Canada/P.Chandra et al); Optical: NASA/STScI

Posted by Synlah for Roqoo Depot

Eye on the Sky: Italian Boot

September 18, 2012 at 10:59 am | Posted in Eye on the Sky, Science News | 1 Comment
Tags: ,

The International Space Station captured this night image of Europe on Aug. 18, 2012 while flying 240 miles above the Mediterranean Sea.

Image credit: NASA

Posted by Synlah for Roqoo Depot
Next Page »

Blog at WordPress.com. | The Pool Theme.
Entries and comments feeds.

Follow

Get every new post delivered to your Inbox.

Join 703 other followers