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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.
24 April 2013, 03:52 PM ET
Find out how Hubble has stayed on the cutting edge of deep-space astronomy for the past 20 years.
24 April 2013, 03:33 PM ET
The moons of Saturn — 62 in all — come in a variety of sizes and compositions.
24 April 2013, 03:26 PM ET
Die-hard fans are brgining new life to the 1960s Galileo shuttlecraft of TV's original 'Star Trek' series.
24 April 2013, 02:37 PM ET
The names still have to be accepted by the International Astronomical Union.
24 April 2013, 01:07 PM ET
A new show from the writers of 'Mad Men' might depict 1960s-era space journalists.
24 April 2013, 12:58 PM ET
A solar powered plane makes a test flight over San Francisco ahead of a planned cross country flight in May.
24 April 2013, 12:00 PM ET
The 6th European Conference on Space Debris is being held this week in Germany.
24 April 2013, 12:00 PM ET
See launch photos for Russia's Progress 51 (M-19M) cargo ship bound for the International Space Station.
24 April 2013, 10:30 AM ET
Take a tour of the robot cargo ship fleet for the International Space Station in this spaceship photo tour.
24 April 2013, 09:56 AM ET
After launching from Kazakhstan early this morning, a Russian Progress capsule suffered a glitch once in orbit.
24 April 2013, 09:13 AM ET
The Progress 51 cargo craft successfully launched from Baikonur Cosmodrome in Kazakhstan on April 24th, 2013. While on-orbit, an antenna used as a navigational aid did not deploy, ground controllers are currently assessing the situation.
24 April 2013, 08:00 AM ET
A technician focuses a television camera on a ramjet engine in a wind tunnel.
24 April 2013, 07:13 AM ET
Since launch in 1990, the Hubble Space Telescope (HST) has provided amazing images that have led to discoveries. Explore Hubble's history and facts.
