11 August 2011, 04:32 PM ET
The Chandra X-ray Observatory has captured galaxies VV 340 North and VV340 South at the early stages of their merge, an interaction that will take millions of years. This cosmic punctuation mark is located about 450 million light years from Earth.
29 July 2011, 01:47 PM ET
Over 16,000 feet up in the Chilean Andes, a multi-national group is constructing a complex antenna that could revolutionize our understanding the origins of the universe.
28 July 2011, 07:00 AM ET
Dark matter could help life evolve and survive on distant worlds outside of our solar system, a new study says.
27 July 2011, 06:01 AM ET
The three galaxies that make up the Leo Triplet are located about 35 million light-years away from Earth.
22 July 2011, 05:53 PM ET
Galaxy IC 342's delicate pattern of dust looks like a spider's web swirled into a spiral.
20 July 2011, 02:49 PM ET
Three astronomers explain how the Space Telescope can peer back into the early universe, detecting which galaxies are moving toward – and which away from – us.
20 July 2011, 09:40 AM ET
Deep inside star cluster NGC 1929 – a satellite galaxy of the Milky Way – winds from young stars and shockwaves from supernova explosions are carving a bubble-like structure 325 x 250 light year across. The stellar material glows colorfully.
11 July 2011, 03:12 PM ET
Observations of Cepheus B, a cloud of hydrogen 2,400 light years from Earth, is proving that more new stars are born through radiation emissions than previously thought.
01 July 2011, 11:29 PM ET
From the brightest object ever found to private space taxis, it was a busy week in space.
30 June 2011, 07:28 PM ET
Accelerated high energy particles produced a series of stripes in the remnants of the Tycho supernova. Chandra X-ray Telescope revealed this feature, showing an expanding bubble of superheated debris.
28 June 2011, 02:13 PM ET
Gas from a supergiant star was swallowed into a neighboring neutron star's gravity field, superheating the gas and producing a flare lasting 4 hours. XMM-Newton space observatory witnessed the IGR J18410-0535 system event. (Video: art. impression)
23 June 2011, 10:46 AM ET
Within the Orion constellation lies the red supergiant star Betelgeuse and its colorful flame-like nebula. Zoom into the new infrared image from the European Southern Observatory's Very Large Telescope of the dying star.
23 June 2011, 08:01 AM ET
The planets Venus, Jupiter, Mars are shining bright at dawn in the northeastern sky.
23 June 2011, 06:01 AM ET
The nebula stretches about 37 billion miles away from its parent star's surface.
22 June 2011, 01:26 PM ET
Look into the violent history of galaxy cluster Abel 2744, which includes a cosmic throw down that lasted a period of 350 million years.
21 June 2011, 08:37 AM ET
18th century observer Charles Messier only cared for comets, yet he's remembered for his catalogue of stars and clusters.
17 June 2011, 11:50 AM ET
A supermassive black hole in the galaxy GRS 1915+105 spins and swallows stellar material with an even rhythmic pattern, the Chandra X-ray observatory has discovered.
17 June 2011, 08:00 AM ET
A new photo from the Hubble Space Telescope shows our dusty neighbor galaxy Centaurus A in bright and brilliant detail.
16 June 2011, 02:01 PM ET
Did a massive black hole in a distant galaxy devour a star that wandered too close, producing a bright jet pointed at Earth?
16 June 2011, 06:00 AM ET
A glowing ring spotted in space seems at first more like superhero fiction than science fact.
10 June 2011, 03:12 PM ET
A newly released image from the Hubble Space Telescope shows details of a supernova explosion in a neighboring galaxy.
09 June 2011, 11:37 AM ET
Saturn forms two night sky triangles this month, one with stars and the other with the moon.
08 June 2011, 01:00 PM ET
A group of supernova explosions that don't fit into pre-existing categories is challenging astronomers understanding of how stars die.
07 June 2011, 01:08 PM ET
An oddball conglomeration of stars called NGC 6791 represents an entirely new class of star cluster, a new study suggests.
06 June 2011, 11:42 AM ET
At a stargazing event held as part of the 2011 World Science Festival, about 500 people gathered in Brooklyn Bridge Park to look at a handful of stars and the planet Saturn.
03 June 2011, 12:03 PM ET
The binary star Porrima is offering a rare chance to resolve its twin stars through a small telescope this month.
03 June 2011, 07:00 AM ET
A lone-wolf star could change astronomers' understanding of star formation.
02 June 2011, 01:16 PM ET
The fine detail and exceptionally perfect spiral structure of the galaxy make it hard to believe that this is a real observation and not an artist’s impression or a screenshot taken straight from Star Wars.
01 June 2011, 10:35 AM ET
There are a great many wonders to see in the night sky. A telescope is your magic carpet, your time machine and much more.
01 June 2011, 06:01 AM ET
Astronomers have photographed a dead-ringer of the Milky Way.
31 May 2011, 10:27 AM ET
All large galaxies - including ours - seem to have supermassive black holes at their centers. Astrophysicists Ann Wehrle, Roeland van der Marel and Ed Turner explain how these beasts form.
31 May 2011, 01:05 AM ET
See spectacular images of different kinds of galaxies from the WISE mission.
30 May 2011, 07:00 AM ET
A newfound stretch of the Milky Way reveals that our galaxy's distant rim is shaped like the edge of a sombrero.
26 May 2011, 12:36 PM ET
A green crystal rain falling onto an infant star holds the key to weird minerals in comets.
23 May 2011, 11:22 AM ET
Observations of a single star in 1923 changed the course of astronomy forever.
23 May 2011, 12:00 AM ET
Astronomers get treated to their closest view yet of jets escaping a galaxy's central black hole.