23 December 2013, 10:54 AM ET
A malfunctioning cooling pump was removed in the first of a multiple space walk repair mission for ISS astronauts. Astronauts Rick Mastracchio and Mike Hopkins completed Spacewalk #1 on Dec. 21, 2013.
20 December 2013, 02:01 PM ET
Noctilucent clouds, Earth's highest clouds, appeared over the South Pole earlier than usual this year. Water molecules mixed with meteor smoke at the edge of space, creates this phenomenon.
19 December 2013, 02:12 PM ET
Space rocks and a Space rock star consumed much of the viewing this year. Find out which one took the top spot for 2013.
19 December 2013, 12:06 PM ET
European Space Agency's Gaia spacecraft launched from Kourou, French Guiana on Dec. 19, 2013 aboard a Russian Soyuz-Fregat rocket. The spacecraft will deliver the most comprehensive map of the Milky Way to date.
18 December 2013, 06:50 PM ET
Lead U.S. Spacewalk Officer Allison Bolinger explains what the ISS astronauts will be doing over 3 spacewalks to repair cooling system. A pump module needs to be replaced.
18 December 2013, 04:11 PM ET
A piece of an asteroid likely from the asteroid belt burned up over Tennessee December 17th. The object was around 20 inches across and weighing approximately 400 lbs.
17 December 2013, 05:20 PM ET
A 1.3 foot wide space rock, traveling at 56,000 MPH, collided with the lunar surface on March 17th, 2013, and the explosion could be seen with the naked eye on Earth. NASA's Lunar Reconnaissance Orbiter snapped imagery of the impact area.
17 December 2013, 02:33 PM ET
Using a billion pixel camera and 2 telescopes, the European spacecraft will scan every star at least 70 times during a 5 year period. This will create the most comprehensive guide to the Milky Way to date.
17 December 2013, 10:32 AM ET
Variable star RS Puppis was observed by the Space Telescope over a period of 5 weeks. These types of stars are unstable because they have consumed most of the hydrogen fuel. The pulsations seen are not moving gas, but light echoes.
16 December 2013, 01:33 PM ET
A large coronal hole has rotated its way into an Earth-affecting position. It is a dark region where the Sun's magnetic field is more open and emits high-speed solar wind. Auroras may be on tap for Earth as a result .
16 December 2013, 01:27 PM ET
Space Station Malfunction: Fixes Discussed By NASA | Video
ISS Mission Operations Integration Manager Kenny Todd gives an update on the Space Station cooling issue that occurred aboard the International Space Station in Dec. 2013.
16 December 2013, 10:23 AM ET
Iran claims this is its second successful mission of 2013, although many have cast doubts on whether the first mission was legitimate.
16 December 2013, 09:19 AM ET
Chinese State TV released video of the lunar probe Chane'e 3 landing on the moon and deployment of its Yutu rover.
14 December 2013, 02:41 PM ET
China became the first country to make a 'soft landing' of a spacecraft in almost 40 years. The last country to do so was the Soviet Union in 1976.
13 December 2013, 07:09 PM ET
The meteor shower peaks on December 13 and 14, 2013 and NASA is all over it. The shower will be fairly active through December 16th, though the moonlight will cause some interference.
13 December 2013, 11:07 AM ET
In the latest episode of NASA's 'Space To Ground', host Josh Byerly talks about the cooling system failure and the orbital sciences' cargo delivery. Also, in station science: circadian rhythms, and the impact on human eyes while living in space.
13 December 2013, 10:15 AM ET
ISS crew member Rick Mastracchio gives an update on the cooling system failure that occurred on Dec. 12, 2013 and the possible spacewalk to repair. Also, he answers SPACE.com reader questions and talks Christmas.
13 December 2013, 09:27 AM ET
ESA's Gaia mission's billion pixel camera will create the most accurate three dimensional map of our galaxy (mapping a billion stars). Find out how it will do it. The mission is scheduled to launch on December 19th, 2013.
12 December 2013, 04:05 PM ET
Soar over Saturn’s moon Titan to get a bird’s-eye view of the moon’s vast lakes of liquid hydrocarbons in this video made from imagery and data collected by NASA’s Cassini spacecraft.
12 December 2013, 01:58 PM ET
A modified version of the orange Advanced Crew Escape System (ACES) suits worn during launch and re-entry of Space Shuttle flights was tested at the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center in Houston.
12 December 2013, 01:14 PM ET
ISS Mission Operations Integration Manager Kenny Todd explains what happened with the station's cooling loop on Dec 12, 2013 and the efforts to fix the problem. The ISS crew is not in danger but an Orbital Science's cargo delivery may be delayed.
12 December 2013, 11:43 AM ET
The Hubble Space Telescope imaged a water vapor plume emanating from the Moon in Dec. 2012 observations. The artist impression uses actual Jupiter and Europa images with the size of the plume being accurate but the brightness is increased for effect.
11 December 2013, 06:08 PM ET
This computer animation shows how the European Space Agency’s Rosetta spacecraft wakes up from deep space hibernation on 20 January 2014. The spacecraft is headed for a 2014 rendezvous with the Comet 67P/Churyumov–Gerasimenko.
11 December 2013, 04:07 PM ET
Come along for the ride as SPACE.com's @MiriKramer flies with fmr. Air Force pilot Russell Campell aboard a Marchetti SF260. 10 seconds of weightlessness into a 4G turn, Cuban 8 maneuver and more..she even gets to fly the plane!
11 December 2013, 02:48 PM ET
Time-lapse of the observatories atop Mauna Kea, Hawaii created by Sean Goebel.
10 December 2013, 04:37 PM ET
Amateur radio operates beamed up 'Hi' in morse code on Oct. 9th, 2013 to NASA's Juno spacecraft. It was received by the probe and the audio from the event was sent back to Earth.
10 December 2013, 02:46 PM ET
See how amateur ham radio operators beamed messages to NASA’s Jupiter-bound Juno spacecraft during its Earth flyby of Oct. 9, 2013. Did their morse code messages of hello reach Juno?
10 December 2013, 02:40 PM ET
This cosmic pirouette of Earth and our moon was captured by the Juno spacecraft as it flew by Earth on Oct. 9, 2013. Set be inserted into Jupiter orbit in August 2016.
10 December 2013, 12:37 PM ET
A new record for cold temperatures minus 136 F (minus 93.2 C) was set Aug. 10, 2010 on the East Antarctic Plateau. NASA scientists have figured out how our planet creates these bone chilling temperatures.
10 December 2013, 09:59 AM ET
Robonaut 2 (R2) is having its legs tested on the ground while the rest of the robot is undergoing experimental trial on the ISS. The legs will provide mobility necessary for tasks inside and out of Space Station.
09 December 2013, 06:47 PM ET
Data from several NASA satellites have been analyzed and the lowest temperature detected was a record breaking -136° F (-93.2° C) on Aug 10th, 2013 on a high ridge in Antartica. Its nearly 8°F degrees cooler than the previous record.
09 December 2013, 12:49 PM ET
The Mars Science Laboratory radiation detector, in operation for over a year on the Red Planet, is showing levels that are manageable for human exploration but the planet has not been hit with any big solar storms during this time.