28 January 2011, 01:30 PM ET
The constellations of Orion and Taurus point the way to two shining star clusters.
26 January 2011, 01:01 PM ET
Astronomers have peered back in time further than ever before, spotting a galaxy that formed less than 500 million years after birth creation of our universe.
25 January 2011, 05:11 PM ET
A huge star has been photographed slamming through a barrier of cosmic dust.
21 January 2011, 06:18 PM ET
Next Wednesday (Jan. 26), NASA is expected to announce a major discovery made by researchers using the Hubble Space Telescope.
19 January 2011, 02:20 PM ET
A scorching-hot alien planet may be causing its parent star to inflate and deflate like a balloon.
19 January 2011, 02:09 PM ET
Key new clues in the mystery behind what feeds the monstrous supermassive black holes have come to light.
14 January 2011, 05:01 PM ET
The two cousin galaxies couldn't look more different from one another.
14 January 2011, 07:23 AM ET
Scientists have released the largest digital color image of the sky ever made, and it's free to whoever wants to take a look.
13 January 2011, 01:08 PM ET
A dwarf galaxy that is too dim to see but is thought to orbit the Milky Way could soon be found using a new mathematical technique that analyzes ripples in the distribution of gas in spiral galaxies.
13 January 2011, 12:04 PM ET
Researchers have mapped out the dark matter in a sample of huge galaxies.
12 January 2011, 07:08 PM ET
Astronomers have now measured the most massive black hole known from our cosmic neighborhood, a huge beast with a mass of 6.6 billion suns, a new study reports.
12 January 2011, 04:45 PM ET
An advanced camera on a South American telescope will search for clues to why the universe's expansion is speeding up.
12 January 2011, 04:15 PM ET
The lightweight stars originally looked like planets to the exoplanet-hunting observatory.
12 January 2011, 01:02 PM ET
Cosmic lenses created by pockets of warped space-time may be throwing off the population count of the earliest galaxies.
12 January 2011, 01:01 PM ET
Study finds a 'protocluster' of galaxies as they were only a billion years after the Big Bang
10 January 2011, 05:20 PM ET
The newly discovered Kepler-10b isn't the first alien planet that astronomers have announced is rocky. But they're more sure about Kepler-10b's composition than they've been before, because they know its host star so well.
10 January 2011, 03:46 PM ET
NASA's Hubble Space Telescope is helping demystify one of the strangest space objects ever seen.
10 January 2011, 01:14 PM ET
The alien solar system could reveal why many planets orbit so close to their parents.
10 January 2011, 10:00 AM ET
Jupiter, the moon and Uranus will over a skywatching show as the crescent moon passes north of both planets on Jan. 9 and Jan. 10.
09 January 2011, 01:01 PM ET
Which comes first: a galaxy or its central black hole?
06 January 2011, 12:33 PM ET
Infrared and X-ray images show our neighboring galaxy in a whole new light.
05 January 2011, 11:28 AM ET
A gorgeous new image from the European Southern Observatory shows the glowing, blue Lagoon Nebula - a hotbed of stellar activity - amid a backdrop speckled with bright stars.
05 January 2011, 09:34 AM ET
For years, scientists thought that huge black holes needed to gorge on matter from colliding galaxies. But that may not be, a new study finds.
04 January 2011, 06:28 PM ET
A ten-year-old amateur astronomer became the youngest person to have ever discovered a stellar explosion, after detecting a supernova in a galaxy within the constellation of Camelopardalis.
29 December 2010, 05:17 PM ET
Intelsat's "zombie" Galaxy 15 satellite that spent months adrift in orbit recently came back to life by resetting itself after an unprecedented malfunction.
27 December 2010, 08:59 AM ET
Some of the brightest stellar explosions in the sky may be flying under astronomers' radar, a new study suggests.
26 December 2010, 08:21 AM ET
NASA's WISE infrared telescope, which recently celebrated the one-year anniversary of its launch into space, has returned some stunning photos lately.
23 December 2010, 04:52 AM ET
Massive stars can form in isolation, not just in crowds.
22 December 2010, 04:03 PM ET
After the Big Dipper, probably the best known grouping of stars in the sky is the constellation Orion.
22 December 2010, 02:06 PM ET
A puzzlingly regular wax-and-wane pattern in the richness of life on Earth may ultimately trace back to our solar system's bobbing path through the Milky Way, a new study suggests.
21 December 2010, 03:34 PM ET
A new array of radio telescopes has captured its first image, showing a huge jet blasting away from a galaxy with a powerful black hole at its heart.
20 December 2010, 10:34 AM ET
Simple tricks and hacks to get you tack-sharp focus on objects seen through a telescope.
20 December 2010, 10:32 AM ET
When you look out deeply into space, you look back far into time. Who might be looking back at you? When did they live? Are they still there? How long will we last? Sky-watching brings wonder...
20 December 2010, 08:45 AM ET
The Yuletide evening sky should provide a brilliant spectacle for anyone willing to brave the cold this season.
17 December 2010, 06:29 AM ET
Astronomers have mapped a rare type of molecule in cosmic clouds that could reveal secrets about how stars form.
16 December 2010, 10:12 PM ET
The young universe was an engine of fast-paced star birth, according to new research.