17 January 2012, 01:10 PM ET
The names were suggested by students competing in a nationwide NASA contest.
17 January 2012, 09:45 AM ET
The new names for the twin Grail moon probes were selected from a nationwide student contest.
16 January 2012, 11:19 AM ET
See amazing astronomy images created by French-born artist Etienne Leopold Trouvelot in the 1800s.
11 January 2012, 06:00 AM ET
Retired NASA spaceflyer Steven Hawley also discussed his own experiences.
10 January 2012, 11:10 AM ET
NASA is looking at missions that would get humanity get out of low-Earth orbit.
07 January 2012, 08:00 AM ET
From a dazzling meteor shower to a smoky nebula with a bright heart, it's been a remarkable week for space photography.
06 January 2012, 03:41 PM ET
Multiple images of the International Space Station flying over the Houston area have been combined into one composite image in this space wallpaper.
04 January 2012, 07:00 AM ET
The huge crater is visible with the naked eye.
03 January 2012, 12:39 PM ET
The Lunar Reconnaissance Orbiter has been capturing imagery of the crater in the tail end of 2011 and the west wall is featured. This will provide researchers with opportunities to learn more about lunar rocks and geology of the Moon.
02 January 2012, 07:00 AM ET
Scientists are testing technologies to one day explore the lakes of Titan.
01 January 2012, 05:05 PM ET
The Grail-A spacecraft is orbiting the moon, and its twin Grail-B has joined it today.
31 December 2011, 11:46 PM ET
NASA's twin Grail gravity-mapping probes
31 December 2011, 04:22 PM ET
The Grail-A spacecraft was captured by the moon's gravity on Saturday afternoon.
31 December 2011, 07:57 AM ET
NASA's twin GRAIL satellites will orbit the moon and measure its gravity field in greater detail than ever before.
31 December 2011, 12:58 AM ET
NASA's Grail mission will map the moon's gravity like never before.
30 December 2011, 06:32 PM ET
See photos of NASA's Grail moon twins, two spacecraft to map the lunar gravity like never before.
30 December 2011, 07:00 AM ET
The Grail spacecraft will start orbiting Earth's nearest neighbor on New Year's Eve and Day.
30 December 2011, 07:00 AM ET
Researchers headed to Chile to test technologies for a possible mission to Saturn's moon Titan.
28 December 2011, 03:09 PM ET
The Grail spacecraft will enter orbit around Earth's nearest neighbor on Saturday and Sunday.
26 December 2011, 07:00 AM ET
Skywatcher takes stunning photo of the smallest full moon of the year.
13 December 2011, 04:28 PM ET
The Republican front-runner said he's proud of the idea.
10 December 2011, 12:01 AM ET
After today, skywatchers will have to wait until 2014 for the next total lunar eclipse.
09 December 2011, 09:22 AM ET
An instrument aboard the Lunar Reconnaissance Orbiter (LRO) will gauge temperatures on the moon while it's in the Earth's shadow on December 10th, 2011. Size and density of rocks can be extrapolated from the results.
08 December 2011, 10:56 AM ET
Intense solar storms can strip material off the surface of the moon like a sandblaster, a new study finds.
02 December 2011, 10:40 AM ET
This partial eclipse was the first of four to occur in 2011 and it’s rare to see so many within the same year.
28 November 2011, 01:33 PM ET
What makes the moon turn dark and red? Find out in this SPACE.com infographic.
28 November 2011, 12:40 PM ET
Researchers are proposing that floating lunar dust grains are ionized by UV rays from the Sun to create the Moon's ionosphere. An ionosphere composed of dust instead of gas is a new frontier for science, one that NASA probes are set to study.
25 November 2011, 07:00 AM ET
Today's partial solar eclipse was the fourth and final one this year.
21 November 2011, 05:14 PM ET
For more than 50 years, NASA's robotic deep space probes have carried nuclear batteries provided by the U.S. Department of Energy. Even the crewed Apollo moon landings carried nuclear powered equipment.
18 November 2011, 05:03 PM ET
A celestial triangle made up of the moon, Mars and Regulus can be seen in the sky early Saturday morning.
18 November 2011, 07:00 AM ET
The new topographic view maps the moon with a resolution of 330 feet per pixel.
17 November 2011, 07:00 AM ET
Bright moonlight could outshine even the brightest meteors this year.
14 November 2011, 02:02 PM ET
Moon Express co-founder Naveen Jain chats with SPACE.com about our planet's natural satellite.
10 November 2011, 02:15 PM ET
NASA's Space Launch Systems upper stage J-2X rocket engine was successfully test fired for 500 seconds on November 9th, 2011.
10 November 2011, 09:24 AM ET
Earth and Planetary Science Professor Randy L. Korotev of Washington University in St. Louis examines meteorites from different celestial bodies and talks about what makes one more valuable than the other.
09 November 2011, 08:58 AM ET
John Chumack (www.galacticimages.com) captured these images of the space rock's Earth fly-by in Yellow Springs, Ohio. The asteroid was about 201,700 miles away and was passing between the Moon and Earth.