19 May 2010, 01:00 PM ET
Two newfound, faint supernovas are hinting at the existence of a new way stars can die.
18 May 2010, 10:58 AM ET
The physical processes behind the spectacular supernova explosions from dying stars are so complex that astrophysicists have only been able to simulate parts of the process, and only in one or two dimensions. That is, until now.
14 May 2010, 11:57 AM ET
The brilliant golden star Arcturus shines bright overhead these spring evenings, an attractive target for skywatchers.
13 May 2010, 01:50 PM ET
A swarm of distant galaxies hidden behind a pervasive veil of cosmic fog has been seen for the first time by telescope European infrared space telescope.
12 May 2010, 01:03 PM ET
A new model solves a puzzling age discrepancy for white dwarf stars
11 May 2010, 04:44 PM ET
A giant reservoir of intergalactic gas has been found along a wall of galaxies 400 million light-years from Earth, providing the strongest evidence yet that the universe's so-called "missing matter" is tucked away in an enormous web of hot, diffuse gas.
11 May 2010, 02:21 PM ET
A monster black hole has been flung from its home galaxy and is careening through space, according to a new study.
05 May 2010, 12:19 PM ET
The huge asteroid Pallas reaches opposition, being opposite to the sun in Earth’s sky, this week, making it a prime target for avid skywatchers.
05 May 2010, 10:34 AM ET
Thousands of galaxies crowding an area on the sky roughly as large as the full moon have been captured in a new image released today by the European Southern Observatory.
04 May 2010, 08:50 AM ET
Black holes might kill entire galaxies with blazing energy, dooming embryonic stars before they can get born.
27 April 2010, 01:50 PM ET
New images from the European Space Agency's Planck space observatory reveal the forces driving star formation and give astronomers a way to understand the complex physics that shape the dust and gas in our galaxy.
26 April 2010, 07:34 AM ET
Hidden young stars in the Cat's Paw Nebula are revealed in a new infrared image.
23 April 2010, 02:42 PM ET
To celebrate the 20th anniversary of the Hubble Space Telescope, NASA has released a stunning new photo of towering peaks of cool hydrogen laced with dust in one of the largest seen star-birth regions in the galaxy, the Carina Nebula.
23 April 2010, 09:48 AM ET
Two new and independent studies using observations from NASA's Chandra X-ray Observatory have demonstrated that Einstein's theory of General Relativity continues to hold true 95 years after it was first published.
21 April 2010, 09:48 AM ET
NASA's Swift satellite detected its 500th gamma-ray burst on April 13, in an explosion in the Cassiopeia constellation.
21 April 2010, 09:07 AM ET
A spiral galaxy that is usually shrouded behind our own Milky Way has come out of hiding in a new photo.
19 April 2010, 09:17 AM ET
A strange and mysterious new object in space may the brightest and long-lasting "micro-quasar" seen thus far, a miniature version of the brightest objects in the universe.
08 April 2010, 06:33 PM ET
A planet-like object appears to be orbiting a cold, mini star called a brown dwarf, calling into question just what it means to be a planet.
08 April 2010, 10:20 AM ET
Hubble has snapped an amazing new photo of a peculiar galaxy caught in the middle of two other galaxies that appear to be stretching it out.
05 April 2010, 04:49 PM ET
Asteroid 824 Anastasia will occult, or block, bright star Zeta Ophiuchi from observers in North America on Tuesday, April 6. 2010.
01 April 2010, 02:20 PM ET
Strange magnetic fields floating in distant expanses of space may help explain how galaxies end up being so magnetic, a new study has found.
24 March 2010, 09:39 AM ET
Mars will be close to the moon on Thursday night, on its way to the far side of the sun.
03 March 2010, 01:07 PM ET
Discovery of old star in small galaxy backs up theory that Milky Way formed by cannibalizing dwarf galaxies.
16 February 2010, 12:48 PM ET
A dramatic new image from the Gemini North telescope, on Mauna Kea in Hawaii, illustrates the dynamic and sometimes violent process of star birth.
08 February 2010, 09:26 AM ET
Using data from the NASA/ESA Hubble Space Telescope, astronomers have created a census of galaxy types and shapes.
28 January 2010, 01:55 PM ET
Small black holes mysteriously self-regulate, just like their supermassive cousins.
22 January 2010, 12:41 PM ET
Inside an exotic class of stars dubbed "electroweak stars," subatomic particles called quarks could be converted into lighter particles such as electrons and neutrinos, according to a new study.
18 January 2010, 03:23 PM ET
New, powerful telescopes have unraveled some secrets behind multiple-star systems.
12 January 2010, 03:01 PM ET
A new snapshot of the giant star Betelgeuse has revealed two enormous bright spots - the first direct evidence of sun-like heat transportation on another star.
11 January 2010, 10:11 PM ET
Galaxies come in many shapes and sizes, but until recently astronomers have been at a loss to explain why.
11 January 2010, 09:11 AM ET
Scientists have just discovered new signs of cannibalism in nearby galaxies, including our closest neighbor, Andromeda.
06 January 2010, 10:01 AM ET
In the world of invisible dark matter, our galaxy is shaped like a giant flattened beach ball, a new study found.
06 January 2010, 06:49 AM ET
New Chandra X-ray Observatory images and computer models show why the Milky Way black hole is starving.
05 January 2010, 08:27 PM ET
Calculations suggest only 15 percent of Milky Way stars may have solar system like ours.
05 January 2010, 03:36 PM ET
NASA's Fermi space telescope has discovered 17 strange spinning stars called pulsars in our galaxy.
05 January 2010, 03:34 PM ET
Infrared images from Hubble reveal most distant galaxies yet spotted.