06 November 2012, 01:38 PM ET
The Centaurus A elliptical galaxy may have swallowed a spiral in its past.
05 November 2012, 02:57 PM ET
The gorgeous photo depicts the galaxy NGC 3738, which is 12 million light-years from Earth.
05 November 2012, 02:45 PM ET
A red giant star named BD+ 48 740, consumed a rocky world according to observations made by the 9.2 meter Hobby-Eberly Telescope. High amounts of lithium contained in the red giant tell this tale of planetary destruction.
02 November 2012, 03:29 PM ET
This space wallpaper shows a pair of gravitationally interacting galaxies called Arp 147, the blue ring-shaped galaxy's distinctive look was probably created when the galaxy on the left passed through the galaxy on the right.
01 November 2012, 03:58 PM ET
Stargazers can catch the constellations of Cassiopeia, Cepheus and Andromeda overhead this week.
01 November 2012, 02:00 PM ET
NASA's Fermi telescope has detected some of the first light emitted by stars in the early universe.
31 October 2012, 05:29 PM ET
An Old Idea Gives Telescopes A New Twist
31 October 2012, 02:01 PM ET
Ancient supernovas occurred shortly after the universe was born in the Big Bang.
31 October 2012, 01:01 PM ET
The competition offers prizes of $12,000, $5,000 and $3,000.
26 October 2012, 07:00 AM ET
The galaxy's core may have been puffed up by a black hole merger, scientists say.
24 October 2012, 01:01 PM ET
A pervasive radiation throughout the sky has befuddled scientists.
24 October 2012, 06:00 AM ET
The huge 9-gigapixel image was snapped by a telescope in Chile.
23 October 2012, 04:55 PM ET
By combining thousands of infrared images by Europe's dust-piercing VISTA telescope, astronomers have been able study more Milky Way stars than ever before.
23 October 2012, 07:00 AM ET
Material falling into a black hole has created a cosmic jet similar to those seen streaming from jet planes.
22 October 2012, 02:40 PM ET
Researchers had thought disks like our own Milky Way had been static for the last 8 billion years.
19 October 2012, 02:04 PM ET
A study of 544 star-forming galaxies observed by the Keck and Hubble telescopes shows that disk galaxies like our own Milky Way unexpectedly reached their current state long after much of the universe's star formation had ceased.
17 October 2012, 10:55 AM ET
The newly discovered Earth-size planet is alluring, but San Franciscans are wary about interstellar travel.
10 October 2012, 03:00 PM ET
NASA turned its Chandra X-Ray Observatory to planetary nebulas in our solar neighborhood (within 5000 light years). These objects are the remains of red giant stars that shed most of their mass as they condense into white dwarfs.
10 October 2012, 01:01 PM ET
A companion star pushing through expelled dust and gas around a red giant star created a spiral structure.
10 October 2012, 12:02 PM ET
Astronomers using the Atacama Large Millimeter Array have discovered a surprising spiral structure and spherical shell surrounding the red giant star R Sculptoris. The shape was probably caused by a hidden companion star orbiting the red giant.
10 October 2012, 10:40 AM ET
This stunning space wallpaper shows the Helix nebula, lies 650 light-years away, in the constellation of Aquarius.
05 October 2012, 11:41 AM ET
A glowing planetary nebula looks like a giant cosmic eye.
05 October 2012, 10:37 AM ET
What a difference 50 years can make. The European Southern Observatory got its start using giant film slides – blurry and inexact by modern standards. Today, high tech digital telescopes and sensors can capture dramatically more detail.
04 October 2012, 01:37 PM ET
These shape-shifting galaxies have taken on the form of a giant mask. The icy blue eyes are actually the cores of two merging galaxies, called NGC 2207 and IC 2163, and the mask is their spiral arms in this cool space wallpaper.
04 October 2012, 07:00 AM ET
Look up to see celestial wonders this week.
03 October 2012, 12:39 PM ET
The find could help explain why bigger galaxies have bigger central black holes.
27 September 2012, 12:18 PM ET
These cosmic conundrums will challenge your knowledge of our home galaxy.
18 September 2012, 07:00 AM ET
The image depicts the galaxy NGC 7090, which is 30 million light-years away.
17 September 2012, 06:32 PM ET
This new instrument on a telescope in Chile will map distant galaxies to attempt to unravel the mystery of dark energy.
17 September 2012, 12:28 PM ET
This new space wallpaper of the reflection nebula Messier 78 was captured using the Wide Field Imager camera on the MPG/ESO 2.2-metre telescope at the La Silla Observatory, Chile.
14 September 2012, 01:03 PM ET
In 1771, comet hunter Charles Messier cataloged 45 objects easily confused with comets. Over time that list grew to 110 nebulae, galaxies and star clusters. Amateur astronomers can observe them all in a single night around the vernal equinox (March).
14 September 2012, 07:30 AM ET
The night sky's autumn constellations follow the summer stars so closely they can be seen well before the air gets chilly.
12 September 2012, 10:34 PM ET
This cool space wallpaper shows the bright, young star left of center gives NGC 1999 its brightness.
12 September 2012, 03:02 PM ET
Photographer John Eklund captured over 260,000 images to create this stunning video of the majestic landscapes in and magnificent skies above the pacific northwest of the United States.
10 September 2012, 07:40 PM ET
The result is a fun offshoot of the online Galaxy Zoo project.
06 September 2012, 09:01 AM ET
An elliptical and a spiral galaxy are pictured together in this new portrait from the Hubble Space Telescope.