22 March 2012, 04:45 PM ET
The Messenger spacecraft began a one-year bonus mission at Mercury, and the twin Grail probes will get 90 more days at the moon.
20 March 2012, 06:12 PM ET
Io is the most volcanically active object in the solar system.
15 March 2012, 07:00 AM ET
Photos from NASA's Lunar Reconnaissance Orbiter animate videos showing the moon in a whole new light.
14 March 2012, 08:28 PM ET
The nation also wants to send spacecraft to Venus, Mars and Jupiter by 2030.
08 March 2012, 03:52 PM ET
Skywatchers can spot the full moon, Venus, Jupiter, Mercury and perhaps even Uranus tonight.
08 March 2012, 10:22 AM ET
See our fantastic skywatcher-submitted photos of the moon and Mars close together in March 2012! Wow!
07 March 2012, 02:49 PM ET
A new study examines how the moon settled into its current synchronous orbit.
07 March 2012, 02:05 PM ET
The Grail probes' measurements should help scientists learn about the moon's structure and evolution.
07 March 2012, 10:22 AM ET
In this space wallpaper, sunlight reflects off the Earth and shines upon the moon, gaining the name "earthshine."
06 March 2012, 04:55 PM ET
This week offers a great view of two celestial heavyweights close together.
06 March 2012, 02:49 PM ET
In a new paper, astronomers claim that a rare alignment of the Earth, moon and sun caused extreme tides that dislodged the iceberg that sunk the Titanic 100 years ago. Other scientists are skeptical.
01 March 2012, 10:55 AM ET
A lot of kids are led to believe this idea.
01 March 2012, 10:19 AM ET
The first footprints put on the moon will probably be there a long, long time.
29 February 2012, 05:55 PM ET
The moon, or any object, can be measured by diameter or mass.
29 February 2012, 02:04 PM ET
The movie voice of the leader of the Transformers (Peter Cullen) narrates this NASA promotional film.
29 February 2012, 09:16 AM ET
Here are some of the highlights in the night skies over the next year.
28 February 2012, 11:55 AM ET
The results point to increased velocities of the asteroids that bombarded the moon 4 billion years ago.
28 February 2012, 05:21 AM ET
Matt Hartman captured Venus, Jupiter and the Moon on the move in this time-lapse. Recorded on February 25th, 2012.
27 February 2012, 12:54 PM ET
Roberto Porto captured this incredible imagery of Venus, Jupiter and the Moon (seen on the horizon) on the road to Teide National Park in Tenerife, Spain. Taken on February 24, 2012.
27 February 2012, 12:32 PM ET
Jupiter and Venus lined up with the moon, and will get even closer together in March.
27 February 2012, 12:31 PM ET
See amazing photos of Venus, Jupiter and the moon in a celestial triple conjunction.
25 February 2012, 12:02 PM ET
Venus, Jupiter and Mercury can be seen near the moon at sunset. Mars makes an appearance.
24 February 2012, 11:58 AM ET
Jupiter, Venus and the crescent moon will shine extra bright just after sunset in the western sky this weekend.
23 February 2012, 02:47 PM ET
The Slooh Space Camera will webcast the action live on Feb. 25 and 26.
22 February 2012, 12:33 PM ET
NASA's New Horizons Pluto mission team is hoping for 100,000 signatures by March 13.
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.