25 April 2013, 06:24 PM ET
A partial lunar eclipse amazed skywatchers around the world today (April 25).
25 April 2013, 06:04 PM ET
NASA's 2014 would effectively cut planetary science funding by more than $200 million.
25 April 2013, 06:00 PM ET
This is part four in an eight-part series dissecting exoplanet science today.
25 April 2013, 05:40 PM ET
The world needs to get serious about removing debris from orbit.
25 April 2013, 05:03 PM ET
The tank will be displayed at the Wings of Dreams Aviation Museum in Florida.
25 April 2013, 04:39 PM ET
After years competing in spaceflight, the United States and the Soviet Union did a joint mission for the first time in 1975.
25 April 2013, 02:52 PM ET
Saturn will be the closer to Earth the night of April 28th than at any time in 2013, what astronomers call an 'opposition' because the ringed giant and the sun will be on opposite sides of the Earth, making it a great opportunity to view the planet.
25 April 2013, 02:35 PM ET
This stunning space wallpaper shows a patchwork network of frozen ridges and troughs that cover the face of Enceladus, Saturn’s most enigmatic of icy moons.
25 April 2013, 02:24 PM ET
Experts have estimated that there are 29,000 objects 10 cm or larger orbiting Earth. Only 7 percent are working satellites. The European Space Agency is looking at ways to mitigate the threat.
25 April 2013, 02:01 PM ET
A new study has found that plumes of dust in Saturn's rings were caused by impact events.
25 April 2013, 02:01 PM ET
A fast, dense pulsar with a white dwarf companion offered a unique test.
25 April 2013, 12:43 PM ET
How do you upchuck if there is no up or down? ISS commander Chris Hadfield explains what astronauts do if they have to vomit.
25 April 2013, 11:50 AM ET
Night sky photographer Bob Andersson captured this amazing photo of the Soul Nebula.
25 April 2013, 11:49 AM ET
A hyper-dense spinning neutron and its rapidly orbiting companion white dwarf star seem to support Einstein’s General Relativity model of gravity under extreme conditions where the theory might have broken down.
25 April 2013, 11:03 AM ET
See photos of the partial lunar eclipse and full moon of April 25, 2013.
25 April 2013, 10:15 AM ET
The full moon of April coincides with the first lunar eclipse of the year on April 25.
25 April 2013, 09:34 AM ET
Technicians make adjustments on the solar-powered, remotely piloted craft before its record-setting flight.
25 April 2013, 09:09 AM ET
The heat from newborn stars creates a halo of gas around its parent galaxy. When a distant galaxy's black hole-powered light is absorbed by the gas, the Hubble Space Telescope's Cosmic Origins Spectrograph (COS) can detect it.
25 April 2013, 09:01 AM ET
Starburst galaxies create an intense galactic wind that affects future star formation.
25 April 2013, 07:00 AM ET
The comet might even be bright even to see during the daytime.
24 April 2013, 06:55 PM ET
See amazing views of the sun from NASA's Solar Dynamics Observatory, which snaps HD solar photos 24/7.
24 April 2013, 06:54 PM ET
Planetary Resources hopes to loft a set of cubesats to Earth orbit by this time next year.
24 April 2013, 05:59 PM ET
The three solar eruptions may deal a glancing blow to NASA's Messenger spacecraft at Mercury.
24 April 2013, 04:57 PM ET
Live webcasts of the first lunar eclipse of 2013 begin at 3 p.m. ET (1900 GMT) on April 25.
24 April 2013, 04:32 PM ET
The photo shows the Spirit Mars rover's efforts to turn around, not amuse its handlers.