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.
03 November 2011, 10:23 AM ET
Asteroid 2005 YU55 will fly an estimated 201,700 miles from Earth at its closest point (Nov. 8th & 9th). Radio antennas pointed towards the 1300-foot-wide space rock will provide scientists with imagery resolution of up to 7 feet per pixel.
28 October 2011, 07:30 AM ET
A rundown of some of October's spooky space happenings, just in time for Halloween.
20 October 2011, 04:16 PM ET
The Orionids aren't the only interesting objects in the sky this week.
11 October 2011, 07:00 AM ET
A new map of the lunar surface revealed areas rich in valuable titanium ore.
11 October 2011, 02:28 AM ET
Skywatchers shoot remarkable image of Earth’s gibbous moon captured in the hands of an observer holding tissue paper.
10 October 2011, 10:46 AM ET
The crowds turned out Saturday for International Observe the Moon Night.
07 October 2011, 02:54 PM ET
The public is invited to celebrate International Observe the Moon Night tomorrow (Oct. 8).
04 October 2011, 07:23 PM ET
Peaking under the thick atmosphere using Cassini's Visual and Infrared Mapping Spectrometer, an international team has composed a global color map of Titan. This mosaic was compiled from imagery taken over seventy flybys of Saturn's largest moon.
03 October 2011, 10:40 AM ET
Two comets and the Draconid meteor shower dominate October's skywatching events.
03 October 2011, 10:37 AM ET
The waves are generated by temperature differences created by the moon's shadow.
10 September 2011, 09:39 AM ET
See amazing launch photos of NASA's twin Grail gravity probe launch.
10 September 2011, 09:08 AM ET
NASA's Grail mission will study the inside of the moon and its gravitational field.
10 September 2011, 08:21 AM ET
High-altitude winds have once again delayed the launch of NASA's Grail mission.