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29 July 2015, 04:17 PM ET
As a small galaxy crosses paths with a gigantic galaxy, its "fluffy outer parts" are stripped according to the the simulation creators M. Sandoval and A. Romanowsky. The dense core is what remains.
29 July 2015, 02:56 PM ET
Enhanced imagery of Saturn satellite Tethys show arcing streaks spanning hundreds of mile across the battered surface. These may be ice with organic impurities, outgassing from within the moon, or markers of fractures in the frozen rock.
29 July 2015, 01:43 PM ET
Got questions about artificial intelligence? Stephen Hawking has answers.
29 July 2015, 01:34 PM ET
The desert regions of Saturn's moon Titan may have once hosted water that left behind traces of dry material on the surface, like rings on a bathtub, new research suggests.
29 July 2015, 01:01 PM ET
Astronomers have discovered the first aurora ever seen outside the solar system, an alien light show more powerful than any other aurora ever witnessed, perhaps 1 million times brighter Earth's northern lights.
29 July 2015, 11:58 AM ET
The dark red pole on Pluto's largest moon Charon may be some of the dwarf planet's own siphoned-off atmosphere.
29 July 2015, 09:42 AM ET
Astronauts aboard the International Space Station had a little bit of fun with a Red Camera, antacid tablet and a water bubble
29 July 2015, 08:30 AM ET
The photo shows SpaceShipTwo pilot Peter Siebold floating back to Earth via parachute on Oct. 31, just moments after the vehicle broke apart in a test-flight disaster that killed co-pilot Michael Alsbury.
29 July 2015, 07:01 AM ET
Colorful new maps of the dwarf planet Ceres reveal its dramatic mountains and deep craters, now with official new names.
29 July 2015, 07:01 AM ET
The Space Launch System megarocket, scheduled to fly for the first time in 2018, will blast unmanned spacecraft toward their targets at unprecedented speeds, dramatically reducing interplanetary travel times, advocates say.
29 July 2015, 07:01 AM ET
On Friday, much of the world will have the opportunity to observe a Blue Moon: A somewhat rare occurrence that doesn't have anything to do with the moon's color.
29 July 2015, 07:00 AM ET
Photographers in La Palma, Spain, captured this sliver of moon over a cloud landscape that evokes Cloud City on the planet Bespin, a floating metropolis from "Star Wars: The Empire Strikes Back."
29 July 2015, 07:00 AM ET
Researchers are making strides on a radio telescope array that would be unfurled on the farside of the moon by an unmanned rover operated by astronauts hovering nearby at a gravitationally stable point in space.
28 July 2015, 08:20 PM ET
See photos and images of Ceres, a dwarf planet and the largest asteroid in the solar system yet known. Ceres is round and may contain more fresh water than the entire Earth. NASA's Dawn spacecraft will explore Ceres in 2015.
28 July 2015, 05:14 PM ET
The New Technology Telescope at ESO’s La Silla Observatory imaged Nova Centauri 2013 (V1369 Centauri) in July 2015, discovering the unexpected presence of the element lithium.
28 July 2015, 04:51 PM ET
In order to begin addressing looming problem of human-created orbital debris, the Swiss Clean Space One project is developing a satellite to capture a test Cubesat.
28 July 2015, 04:00 PM ET
The fatal breakup and crash of Virgin Galactic's first SpaceShipTwo space plane last year was caused by a co-pilot error, as well as the failure of the spacecraft's builders to anticipate such a catastrophic mistake, federal safety investigators say.
28 July 2015, 02:52 PM ET
The pilots hired to fly SpaceShipTwo have extensive flight and spaceflight experience.
28 July 2015, 02:30 PM ET
The founder of Virgin Group gives a statement in regards to the report. The NTSB found that the co-pilot triggered the failure.
28 July 2015, 01:18 PM ET
The NTSB has released video showing several angles of the doomed SpaceShipTwo flight, from initial separation from the White Knight carrier aircraft to the moment when the ‘feather’ was manually unlocked, too early in the flight, causing the accident
28 July 2015, 12:35 PM ET
NASA’s Dawn probe compiled topographic data from images taken at different times and Sun-angles. Colors represent elevations - starting 3.7 miles (6 kilometers) below the average surface (purple) to 3.7 miles (6 kilometers) above (brown).
28 July 2015, 12:09 PM ET
An asteroid packed with about $5 trillion worth of platinum zoomed past Earth on Sunday (July 19). Asteroid 2011 UW158 missed Earth by about 1.5 million miles (2.4 million kilometers), researchers said.
28 July 2015, 11:04 AM ET
Incident investigators find that SpaceShipTwo’s re-entry feather system was manually unlocked too early in the flight causing extreme aerodynamic loading leading to catastrophic structural failure.
28 July 2015, 11:01 AM ET
The fiery demise of ancient huts in southern Africa 1,000 years ago left clues to understanding a bizarre weak spot in the Earth's magnetic field — and the role it plays in the magnetic poles' periodic reversals.
28 July 2015, 10:15 AM ET
Traveling at a breakneck speed of about 3700 mph (1652 m/s) in orbit around the moon, NASA LRO ‘drivers’ plan, program, upload, monitor and tweak - over and over again every day.
28 July 2015, 10:07 AM ET
The Smithsonian's Kickstarter crowdfunding campaign to conserve, digitize, and display astronaut Neil Armstrong's Apollo spacesuit rocketed to success and is now reaching to "reboot" Alan Shepard's Freedom 7 suit and other historic space artifacts.
28 July 2015, 09:38 AM ET
NASA is looking into a wild idea to explore the atmosphere of Jupiter or other gas giant planets using a robotic spacecraft designed to sail across extraterrestrial skies.
28 July 2015, 07:31 AM ET
A team of engineers has been at work for the past three years to develop a space cleanup satellite. The intent is to eliminate threatening, human-made orbital debris. The worry is not new – there’s lots of clutter to pick and choose from.
28 July 2015, 07:30 AM ET
Measurements by Curiosity's rock-zapping ChemCam laser and another instrument revealed that a chunk of bedrock dubbed Elk contains high levels of silica and thus is a good candidate to preserve ancient organic molecules, if any exist in the area.
28 July 2015, 07:04 AM ET
See how Switzerland plans to clean up space junk using a small claw-equipped satellite.
28 July 2015, 07:00 AM ET
A new image captured by NASA's Cassini spacecraft highlights an impact basin on the Saturn moon Tethys. Called Odysseus, the 280-mile-wide (450 kilometers) impact basin is nearly half as wide as the satellite itself.
28 July 2015, 03:23 AM ET
You've been blown out your spaceship's airlock without a spacesuit — now what?
27 July 2015, 11:20 PM ET
A number of prominent scientists have signed on to a letter warning that autonomous weapons should be banned.
27 July 2015, 10:57 PM ET
It took almost a decade for NASA’s New Horizons spacecraft to navigate its way across the solar system. Was it worth the wait?
27 July 2015, 05:50 PM ET
Scientists and engineers had to work at breakneck speed to get New Horizons launched during a brief window in January 2006, or the probe's highly anticipated Pluto encounter would have been pushed into 2016 at the earliest.
27 July 2015, 05:49 PM ET
With all the news about Pluto this month, most skywatchers may not be aware that Ceres, the brightest and nearest of the dwarf planets, reached its opposition to the sun on Saturday (July 25).