19 October 2012, 02:03 PM ET
The moon is about one-fourth as big as Earth, relatively large for a planet's satellite.
18 October 2012, 01:08 PM ET
The half-dozen icy satellites may have been spawned by a merger of bigger bodies that created Saturn's huge moon Titan.
17 October 2012, 03:39 PM ET
A researcher at the Southwest Research Institute has constructed a moon-making scenario in which an object 4 or 5 times the mass of Mars collided with young Earth. A Mars-sized impactor was previously predicted.
17 October 2012, 03:01 PM ET
Two new studies bolster the theory that the moon formed after a giant impact between two planets.
15 October 2012, 07:00 AM ET
Glass beads in moon rocks revealed a link to the sun.
10 October 2012, 04:29 PM ET
Amateur astronomers Gianluca Masi and Francesca Nocentini created this brief video of asteroid 2012 TC4 as it approached a near-Earth flyby on October 8th, 2012. The asteroid will come closest on October 12.
10 October 2012, 11:19 AM ET
The two brightest objects in the sky may be visible as you wait for your train or bus.
10 October 2012, 05:30 AM ET
Tne 2012 supermoon puts a stunning spotlight on star trails over field of flowers.
09 October 2012, 12:41 PM ET
The Moon likely formed 4.5 Billion years ago as a Mars-sized body smashed into Earth (so compositions are similar). Lunar tidal forces encouraged life to flourish in the oceans. The Moon absorbed many asteroid impacts that threatened Earth's life.
08 October 2012, 06:58 AM ET
The proposed project is a joint effort of Europe and Russia.
28 September 2012, 03:31 PM ET
99% the diameter of Mercury but only a third of Mercury's mass, what lies beneath deep beneath Callisto's pockmarked surface may surprise you. And it's probably the best place to base future explorations of the Jupiter system.
28 September 2012, 01:00 PM ET
The Slooh Space Camera will be webcasting live feeds from observatories around the world.
28 September 2012, 06:57 AM ET
This month's full moon has traditionally helped farmers work late into the evening gathering their crop.
24 September 2012, 11:46 AM ET
The largest public meteorite auction ever held opens in Manhattan in October.
21 September 2012, 07:00 AM ET
Spectacular crescent moon hangs in night sky photo.
12 September 2012, 01:29 PM ET
Many people are puzzled when they can't find Earth's nearest neighbor in the evening sky.
12 September 2012, 10:53 AM ET
See amazing night sky photos taken by SPACE.com readers during September 2012.
05 September 2012, 07:00 AM ET
The moon will have close encounters with three celestial bodies this month.
05 September 2012, 12:06 AM ET
This space wallpaper captured the second full Moon of the month – known as a ‘blue’ Moon – just before it disappeared from the MSG-3 satellite’s sight behind the southern hemisphere.
04 September 2012, 10:41 AM ET
Amateur astronomer Peter Sonney captured this footage of Augusts' bright blue moon around 1:20 AM on Saturday, September 1st.
04 September 2012, 08:29 AM ET
International Observe the Moon Night is on September 22nd. The annual event inspired by the Lunar Reconnaissance Orbiter mission.
01 September 2012, 08:20 AM ET
Amazing photos of the Aug. 31, 2012 blue moon were captured by skywatchers all over Earth.
01 September 2012, 02:57 AM ET
A rare second Full Moon of the month, known as a "Blue Moon", is seen over Cincinnati on Friday, Aug. 31, 2012 in this amazing space wallpaper.
31 August 2012, 12:14 PM ET
A blue moon is the second full moon in a single month.
31 August 2012, 06:00 AM ET
It's the last chance to see a blue moon until July 2015.
31 August 2012, 04:26 AM ET
Thought to be called "blue" after an old english term meaning "betrayer," a Blue Moon is an extra full moon that occurs due to a quirk of the calendar.
30 August 2012, 10:35 AM ET
The online Slooh Space Camera will broadcast live views of Friday's full moon.
29 August 2012, 02:38 PM ET
In this space wallpaper, the Moon appears large because it is seen close to the horizon and our perception is deceived by the proximity of references on the ground.
29 August 2012, 11:26 AM ET
Far away from light pollution and high up in the Sierra Nevada mountain range, Yosemite National Park's stunning views of the night sky and majestic natural wonders attract astronomers, photographers and city dwellers from around the country.
29 August 2012, 07:00 AM ET
Blue moons are not really blue. And they're not all that rare, either.
27 August 2012, 07:00 AM ET
The next blue moon won't come until July 2015.
25 August 2012, 12:19 AM ET
See historic photos from NASA's Apollo program to put humans on the moon in the 1960s and early 70s.
23 August 2012, 11:28 AM ET
This early morning shot of the iconic salt march captures the crescent moon with Jupiter and Venus.
15 August 2012, 08:02 PM ET
The results confirm observations made 40 years ago on the lunar surface.
13 August 2012, 10:41 AM ET
Moon phases are not caused by the shadow of the Earth falling on the moon.
09 August 2012, 10:19 PM ET
See sky maps to help spot the skywatching events of August 2012.