22 February 2012, 11:17 AM ET
A reflection nebula is a cloud of dust visible with the help of energy from a nearby star or stars.
22 February 2012, 10:51 AM ET
NASA's Solar Dynamics Observatory snapped the footage Tuesday.
21 February 2012, 07:33 AM ET
High resolution imagery provided by NASA's Lunar Reconnaissance Orbiter has shown that small valleys in some parts of the moon are slowly forming. This suggests that the moon's crust is expanding is some areas.
17 February 2012, 01:45 PM ET
Avid astrophotographer Tamas Ladanyi snaps stunnning image of 22 degree halo.
15 February 2012, 11:00 AM ET
See amazing full moon photos from skywatchers and photographers of the February 2012 full moon.
10 February 2012, 12:58 PM ET
The crew of the International Space Station caught this phenomenal view of the Moon setting over the Atlantic Ocean on January 9th, 2012.
08 February 2012, 11:53 AM ET
A celestial show will be on offer for skywatchers this week.
01 February 2012, 04:58 PM ET
NASA's Grail probes have returned their first view of the far side of the moon.
01 February 2012, 04:36 PM ET
The petition hopes to collect 100,000 signatures by March 13.
31 January 2012, 06:00 AM ET
One of the brightest objects in the sky, Venus is visible from Earth because it is close to the orbit of the sun.
30 January 2012, 03:45 PM ET
Newt Gingrich promises a lunar colony in less than a decade, but experts question whether it's possible.
28 January 2012, 07:00 AM ET
A waxing crescent moon will pay a visit to Jupiter in the evening sky.
27 January 2012, 09:18 PM ET
See images of the moon and Venus close together.
27 January 2012, 10:23 AM ET
The asteroid 2012 BX34 came within 36,750 miles of Earth.
26 January 2012, 04:31 PM ET
Asteroid 2012 BX34 won't hit us, experts say.
26 January 2012, 02:01 PM ET
Researchers are still unclear about what might have powered this ancient lunar magnetic field.
24 January 2012, 03:33 PM ET
A celestial convergence is set to take place this week.
24 January 2012, 07:00 AM ET
Dunes on the huge moon vary according to latitude and elevation.
20 January 2012, 03:12 PM ET
China targets 2013 for launch of a lunar landing mission.
19 January 2012, 02:34 PM ET
Russia is in discussions with NASA and the European Space Agency, according to news reports.
19 January 2012, 01:35 PM ET
New Horizons is zooming toward a close encounter with Pluto in 2015.
19 January 2012, 10:28 AM ET
A NASA satellite found ice where the sun doesn't shine.
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.