31 March 2011, 10:32 AM ET
Sub-brown dwarfs – a mid-point between planets and stars – could prove fertile grounds for extraterrestrial life.
30 March 2011, 03:54 PM ET
Saturn is back in the evening sky and here's how to see it.
30 March 2011, 01:01 PM ET
Astronomers have taken the pulse of red giant stars using starquakes.
30 March 2011, 07:00 AM ET
The star cluster NGC 371 glows pink and red in a new photo from ESO's Very Large Telescope.
29 March 2011, 04:52 PM ET
Spring is here, and with it a seasonal star formation is front and center in the night sky.
24 March 2011, 05:05 PM ET
A Japanese space observatory has revealed the clearest view yet of the dusty Perseus galaxy cluster 250 million light-years from Earth.
23 March 2011, 10:01 AM ET
Astronomers may have detected a new candidate for the coldest known star.
16 March 2011, 11:14 AM ET
A close-up view of a busy star-birthing region shows the dramatic effects newborn stars have on the surrounding gas and dust.
11 March 2011, 06:22 PM ET
The "eye" is really the environment around a spiral galaxy called NGC 4151, which is 43 million light-years from Earth.
11 March 2011, 12:59 AM ET
A dying star has been caught brewing up a toxic mix of gases in deep space. A new Hubble Space Telescope photo shows the star, which is creating the Westbrook nebula.
10 March 2011, 12:26 PM ET
The slim crescent moon will pass the Pleiades star cluster tonight.
09 March 2011, 06:33 PM ET
Astronomers have spotted an ancient galaxy cluster that appears surprisingly young. The galaxy cluster formed nearly 3 billion years after the birth of the universe, but is surprisingly mature, scientists say.
08 March 2011, 03:48 PM ET
Astrophysicist Stephen Hawking and Apollo 11 moonwalker Buzz Aldrin have teamed up to advance humanity's future beyond Earth. Hawking and Aldrin hope to support future exploration.
03 March 2011, 02:01 PM ET
A longstanding question in astronomy is what creates cosmic rays, the super-speedy space particles that can zip right through the Earth.
02 March 2011, 07:58 AM ET
The dusty galaxy NGC 247 is 1 million light-years closer to Earth than once thought.
02 March 2011, 07:12 AM ET
The giant black hole at the heart of galaxy Markarian 231 kicks up a flood of material — behavior that starves the black hole and limits star formation.
28 February 2011, 01:45 PM ET
Findings from NASA's Kepler telescope suggest planets are a dime a dozen in our galaxy.
25 February 2011, 06:00 AM ET
NASA's WISE space telescope took its last photo of the sky on Feb. 1, 2011.
23 February 2011, 05:46 PM ET
The ultradense core of an exploded star contains superfluids, a strange form of superconducting matter.
23 February 2011, 01:09 PM ET
One glance at the night sky shows that some stars are brighter than others. But how bright are they really?
17 February 2011, 09:01 AM ET
A stunning new photo from the Hubble Space Telescope shows newborn stars studding a spiral galaxy like bright blue jewels.
17 February 2011, 07:00 AM ET
Astronomical detectives have assembled a stellar lineup, identifying nearby stars that may come close enough to disrupt our solar system in the next billion years or so.
16 February 2011, 05:54 PM ET
A new study finds that galaxies need the dark matter equivalent of 300 billion suns for star formations.
16 February 2011, 03:15 PM ET
An exquisite, shimmering nebula draped in a veil of interstellar dust is the focus of an image from the European Southern Observatory.
10 February 2011, 04:42 PM ET
Have you ever wondered why most star patterns are associated with specific seasons of the year? Here's why.
10 February 2011, 09:03 AM ET
The first stars in the universe may have been huge, but they weren't the loners astronomers thought.
09 February 2011, 05:51 PM ET
A stunning Valentine's Day photo from space shows a cosmic ring made of black holes and young stars.
09 February 2011, 01:58 PM ET
A new study that suggests the first stars in universe formed in groups, rather than alone, has also revealed a surprising side effect: If conditions were just right, a few of the earliest stars may still be visible today.
07 February 2011, 10:10 AM ET
A supergiant star nearing its death is surrounded by a thick disk of gas and dust that is generally only found around baby stars, as revealed by a new 3D imaging technique.
03 February 2011, 11:40 AM ET
NASA's Kepler mission has discovered its first Earth-size planet candidates and its first candidates in the "habitable zone," the region where liquid water could exist on a planet's surface. One star dubbed Kepler-11 may have as many as 6.
02 February 2011, 06:37 PM ET
An intimate portrait of the newly discovered Kepler-11 planetary system – the most tightly packed planetary system orbiting a single star yet discovered outside of our solar system.
02 February 2011, 01:30 PM ET
A bright galaxy, called NGC 3621, appears to be a good example of a classical spiral galaxy, but astronomers have found that it is actually rather unusual: it does not have a central bulge, and is therefore described as a pure-disk galaxy.
02 February 2011, 01:01 PM ET
Astronomers have discovered an alien solar system containing six planets — including a sunlike star — with five of the newfound worlds orbiting in a close-knit configuration.
02 February 2011, 09:00 AM ET
The Milky Way to the east of the constellation Orion is filled with deep sky gems.
31 January 2011, 03:44 PM ET
NASA's next-generation space telescope could confirm the existence of the oldest galaxy yet seen and peer back even further in time.
28 January 2011, 01:30 PM ET
The constellations of Orion and Taurus point the way to two shining star clusters.