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05 April 2013, 09:47 AM ET
This non-flying, full-scale version of the HL-20 lifting body was used for various tests of maintainability and human factors considerations.
05 April 2013, 06:30 AM ET
NASA's Kepler spacecraft has spotted an ultradense dead star bending the light of its larger companion.
05 April 2013, 06:30 AM ET
Pyongyang's missiles aren't powerful or reliable enough at the moment, experts say.
05 April 2013, 06:30 AM ET
The hundreds of volcanoes on Io are farther east than they're supposed to be.
04 April 2013, 05:09 PM ET
NASA's New Horizon mission snapped imagery of volcanic debris emanating from Io's Tvashtar volcano in 2007. The plume reaches up to 205 miles above the surface of Io.
04 April 2013, 04:20 PM ET
The United States announces it will send a missile defense system to Guam to defend the Pacific Ocean island from North Korea, as the US military adjusts to what Defense Secretary Chuck Hagel called a 'real and clear danger' from Pyongyang. Mana Rabi
04 April 2013, 03:30 PM ET
The interceptor system will help defend Guam against a possible North Korean missile attack.
04 April 2013, 03:14 PM ET
Lightning triggered the blaze on Monday, April 1, according to media reports.
04 April 2013, 03:12 PM ET
This thin, glittering streak of stars seen in this space wallpaper is the spiral galaxy ESO 121-6, which lies in the southern constellation of Pictor (The Painter's Easel).
04 April 2013, 02:53 PM ET
Pete Conrad overcame dyslexia to become one of NASA's most-traveled astronauts, logging four trips into space, including Apollo 12.
04 April 2013, 02:52 PM ET
Night sky photographer Tamas Ladanyi of The World at Night captured this stunning view over the historic city of Pécs, Hungary.
04 April 2013, 02:49 PM ET
Alan Bean walked on the moon during Apollo 12. He turned to painting to chronicle his experiences.
04 April 2013, 02:44 PM ET
Richard F. "Dick" Gordon orbited the moon on Apollo 12. Earlier, he helped astronauts learn how to spacewalk.
04 April 2013, 02:28 PM ET
See photos of a big wildfire near NASA's Kennedy Space Center in Cape Canaveral, Fla., in April 2013.
04 April 2013, 02:00 PM ET
Supercomputer simulations are helping solar scientists get a grip on what's happening inside the sun.
04 April 2013, 12:42 PM ET
Scientists, using the Kepler space telescope, observed the phenomenon of gravitational lensing as the lifeless white dwarf star passed in front of its companion red dwarf. The dead star is about the size of Earth and the mass of the Sun.
04 April 2013, 12:26 PM ET
Even Moon landing hoaxers toe the party line. Who knew?
04 April 2013, 11:46 AM ET
See photos of America's historic spaceport, Kennedy Space Center in Florida
04 April 2013, 11:37 AM ET
The actor wants to pony up $200K for a seat, but doesn't want to be a guinea pig for the program
04 April 2013, 11:36 AM ET
The Hubble Space Telescope spots an ancient, massive star explosion.
04 April 2013, 10:48 AM ET
See photos of the major features at NASA's Johnson Space Center in Houston, home of Mission Control.
04 April 2013, 10:25 AM ET
Saturn's tilt will make this April one of the best for stargazers to view the planet's magnificent rings since 2006. Star clusters, the comet Pan-STARRS , and Jupiter will also be visible in the nights sky.
04 April 2013, 10:19 AM ET
An Alpha Magnetic Spectrometer is running experiments with the ISS to further investigate dark matter in the universe.
04 April 2013, 09:27 AM ET
A technician works atop the Saturn V rocket which is being prepared for the first manned lunar landing mission.
04 April 2013, 09:23 AM ET
NASA's Mars Reconnaissance Orbiter captured the unexpected views of Curiosity's huge parachute from space.
