24 December 2013, 10:01 AM ET
NASA astronauts Rick Mastracchio and Mike Hopkins took to the outside of the International Space Station for an urgent spacewalk on Christmas Eve (Dec. 24) to fix a problem with the orbiting outpost's vital cooling system.
23 December 2013, 06:25 PM ET
Rhea's icy surface bears the scars of innumerable impacts over the eons.
23 December 2013, 01:04 PM ET
Enceladus shines as one of the brightest objects in our solar system. See photos of Saturn's water ice-covered cold moon, as captured by NASA's Cassini spacecraft.
23 December 2013, 12:12 PM ET
See stunning images taken by astronaut Rick Mastracchio aboard the International Space Station during the Expedition 38/39 mission in 2013/2014.
23 December 2013, 11:00 AM ET
See spectacular photographs taken by astronaut Mike Hopkins aboard the International Space Station during the Expedition 37/38 mission in 2013.
21 December 2013, 11:00 AM ET
Astronauts will perform two or three spacewalks to repair a problem with the International Space Station's cooling system, scheduled for Dec. 21, 23 and 25, 2013.
20 December 2013, 11:52 PM ET
From amazing photos of the Gaia galaxy-mapping spacecraft's launch to an amazing Hubble image of a celestial "Christmas wreath," don't miss these amazing space images of the week for Dec. 21, 2013.
19 December 2013, 01:31 AM ET
Here are amazing photos featuring the top 10 space robot "selfies."
16 December 2013, 12:00 PM ET
See photos from Iran's space rocket launches, including the country's first monkey spaceflight.
15 December 2013, 02:54 PM ET
From amazing photos of the “Jade Rabbit” rover basking in Lunar Bay of Rainbows to stunning images of the Geminid meteor shower, don't miss these amazing space images of the week for Dec. 15, 2013.
15 December 2013, 02:10 PM ET
From amazing images of the Geminid meteor shower to cosmic “tadpoles,” don't miss these stunning night sky photos by stargazers and SPACE.com readers.
15 December 2013, 07:55 AM ET
See amazing photos of the 2013 Geminid meteor shower sent to SPACE.com by stargazers, amateur astronomers and veteran night sky photographers.
10 December 2013, 01:14 PM ET
Meet Robonaut 2, NASA's robot helper for space station astronauts.
09 December 2013, 11:46 AM ET
NASA's Mars rover, Curiosity, discovered that the Gale Crater once harbored an ancient lake theoretically capable of hosting microbes.
08 December 2013, 01:06 PM ET
From an amazing video of the mysterious six-sided vortex spinning around Saturn's north pole to some stunning photos of Comet Lovejoy C/2013 R1, don't miss these amazing space images of the week for Dec. 8, 2013.
07 December 2013, 12:12 PM ET
A United Launch Alliance Atlas V rocket carrying a payload for the National Reconnaissance Office lifted off from Space Launch Complex-3. See photos of the launch and launch prep.
06 December 2013, 03:22 PM ET
Comet Lovejoy is putting on a show for sky watchers in 2013.
05 December 2013, 06:01 PM ET
Moon Express, a privately funded company, is developing a robotic spacecraft to land on the moon.
04 December 2013, 03:50 PM ET
See amazing photos of the strange hexagon storm at Saturn's north pole.
03 December 2013, 06:00 PM ET
See photos from SpaceX's SES-8 satellite launch mission atop a an upgraded Falcon 9 rocket on Dec. 3, 2013. Liftoff occurred at 5:41 p.m. EST from Cape Canaveral Air Force Station in Florida.
03 December 2013, 03:00 PM ET
Canadian astronaut Chris Hadfield visited his hometown Nov. 23, 2013 for a book signing event that attracted an estimated 1,000 people in Sarnia, Ont. – population 72,000.
03 December 2013, 02:50 PM ET
See tantalizing spaceship photos from the secretive commercial space company Blue Origins.
02 December 2013, 04:30 PM ET
See images of the space shuttle missions to repair the Hubble Space Telescope, STS-61, STS-82, STS-103, STS-109 and STS-125.
02 December 2013, 12:20 PM ET
See what's up in the night sky for December 2013, including stargazing events and the moon's phases, in this SPACE.com gallery courtesy of Starry Night Software.
01 December 2013, 01:04 PM ET
See launch photos for China's Chang'e 3 moon lander and Yutu rover on Dec. 2, 2013 local time (Dec. 1 EST) from the Xichang Satellite Launch Center.
01 December 2013, 12:44 PM ET
From a stunning image of the Dragon's Head Nebula to a photo of Comet ISON as seen by a NASA Mercury Probe, don't miss these amazing space photos of the week for Dec. 1, 2013.
01 December 2013, 12:00 AM ET
See amazing images of the night sky and cosmos in SPACE.com's gallery of cosmic images posted in November 2013.
29 November 2013, 09:30 AM ET
See photos of the comet C/2012 S1 (ISON), or Comet ISON, which could amaze the world in late 2013.
27 November 2013, 02:02 PM ET
From tasty Earth treats to dehydrated drinks, see what astronauts eat in space.
25 November 2013, 04:00 PM ET
A Progress resupply craft launched to the International Space Station from Kazakhstan on Nov. 25.
23 November 2013, 03:40 PM ET
From an amazing MAVEN spacecraft launch toward the Red Planet to stunning images by astronauts aboard the International Space Station, don't miss these amazing space photos of the week for Nov. 23, 2013.
23 November 2013, 02:24 PM ET
From the dazzling nighttime rocket launch to a spectacular set of photos showing the evolution of Comet ISON over the last few months, don't miss these stunning night sky photos by stargazers and SPACE.com readers.