14 January 2015, 01:00 PM ET
A possible ammonia leak on the International Space Station triggered an evacuation of astronauts and cosmonauts to the Russian side of the orbiting outpost, but now, NASA flight controllers think it was likely a false alarm.
14 January 2015, 12:46 PM ET
International Space Station program manager Mike Suffredini talks about how the astronauts responded to the ammonia leak alarm in the early morning hours of Jan. 14th, 2015.
14 January 2015, 10:32 AM ET
On Jan. 26th, 2015, Asteroid 2004 BL86 will become the largest known space rock to fly this close to Earth (nearest approach = ~745,000 miles).
14 January 2015, 09:10 AM ET
An alarm suggesting a potentially toxic ammonia leak on the International Space Station early Wednesday (Jan. 14) forced astronauts to evacuate the U.S. side of the orbiting lab, but NASA says there is no proof such a leak actually occurred.
14 January 2015, 07:40 AM ET
The HiRISE camera aboard NASA's Mars Reconnaissance Orbiter (MRO) photographed the crater, which lies in the Red Planet's equatorial Elysium Planitia region, on Dec. 2, 2014.
14 January 2015, 07:00 AM ET
Using NASA's planet-hunting Kepler spacecraft, scientists have refined their ability to nail down the ages of individual stars by measuring the objects' mass and how quickly they rotate.
14 January 2015, 07:00 AM ET
On Dec. 29, CIA officials suggested via Twitter that many UFOs reported in the 1950s and '60s were actually high-flying U-2 spy planes.
14 January 2015, 06:00 AM ET
12 telescopes of the Next-Generation Transit Survey (NGTS) at the European Southern Observatory at Paranal, Chile have begun to measure stellar brightness over time to spot of Neptune-sized and smaller planets in orbit around far away stars.
13 January 2015, 11:40 PM ET
Crowdfunding is attempting to pick up where federal funding has left off.
13 January 2015, 10:00 PM ET
The universe was born with the Big Bang as an unimaginably hot, dense point. SPACE.com offers an overview of the universe and its history, age and structure.
13 January 2015, 05:21 PM ET
New images and a movie show Comet Lovejoy in all its glowing green glory.
13 January 2015, 04:05 PM ET
Company founder (and theoretical physicist) Dr. Mark G. Jackson explains how reduced government funding has challenged discovery in the field of physics. His company aims to connect researchers with donors.
13 January 2015, 03:25 PM ET
The UK Space Agency is holding a news conference Friday (Jan. 16) to provide an update on Beagle 2, which was supposed to touch down on Dec. 25, 2003, but is thought to have crashed.
13 January 2015, 03:17 PM ET
Watch the shimmering parade of surface feature names dance in step with the moving terminator as Luna's phase, libration and position angles during the year’s course are animated and time-stamped.
13 January 2015, 02:00 PM ET
Astronomers like to get creative when naming their projects and collaborations. Acronyms from this year's American Astronomical Society meeting included SLoWPOKES, ASAS-SN, ANGST and AGHAST.
13 January 2015, 01:51 PM ET
Like a multi-petal flower, an M5-class flare erupted from the sun on Jan. 12th, 2015 prodding the magnetic field phenomenon. NASA's Solar Dynamics Observatory captured the fireworks in multiple wavelengths.
13 January 2015, 11:30 AM ET
This stunning image shows a bright supernova in the Superwind galaxy taken on Jan. 2 by astrophotographer Justin Ng.
13 January 2015, 11:20 AM ET
China's first lunar lander Chang'e 3 remains is still operation after more than a year on the moon, and has captured a photo of a distant galaxy as seen from the lunar surface.
13 January 2015, 07:30 AM ET
Researchers were able to pinpoint the Saturn system's center of mass, or barycenter, within about 2 miles — a 50-fold improvement over the best estimates provided by ground-based telescopes, NASA officials said.
13 January 2015, 07:30 AM ET
Hundreds of organisms, ranging from bacteria to lichens, can band together to create biological soil crusts in order to survive in tough conditions.
13 January 2015, 07:00 AM ET
The European Space Agency's recent simulation considered what to do if a space rock similar to or larger than the one that exploded over Russia in February 2013 came close to our planet.
12 January 2015, 05:27 PM ET
Celebrity astrophysicist Neil deGrasse Tyson is set to host a late night talk show on the National Geographic Channel starting in April 2015.
12 January 2015, 05:23 PM ET
For the first time in more than three years, a space shuttle main engine has roared to life in support of NASA's next-generation heavy-lift rocket. The SSME, renamed the RS-25, fired Jan. 9 at Stennis Space Center in Mississippi.
12 January 2015, 04:05 PM ET
The Soil Moisture Active Passive satellite, planned to launch on Jan. 29, will improve drought tracking in the United States and around the world.
12 January 2015, 02:53 PM ET
Engineers with the private spaceflight company SpaceX are still trying to piece together what went wrong with a reusable rocket test Saturday, but the company's founder Elon Musk thinks there's a better chance of succeeding during a future test.
12 January 2015, 01:45 PM ET
The supermassive black hole at the center of the Milky Way galaxy recently spit out the largest X-ray flare ever seen in that region, astronomers reported this week at the 225th meeting of the American Astronomical Society.
12 January 2015, 12:25 PM ET
The Stephen Hawking biopic "The Theory of Everything" took home two Golden Globe awards during the Sunday night (Jan. 11) ceremony.
12 January 2015, 11:40 AM ET
Nostalgic fans of space-themed games should have dozens of options to explore.
12 January 2015, 11:33 AM ET
Congress mandated that NASA’s new Space Launch System must use Space Shuttle Main Engines (RS-25 ), one which fired successfully for 500 seconds at the Stennis Space Center in Mississippi on Jan. 9th, 2015.
12 January 2015, 11:20 AM ET
The CRS-5 cargo mission has arrived at the International Space Station on Jan. 12, 2015. It is carrying two tons of supplies and experiments for the crew.
12 January 2015, 09:28 AM ET
A Chinese spacecraft service module has entered orbit around the moon, months after being used in the country's landmark test flight last November that sent a prototype sample-return capsule on a flight around the moon and returned it to Earth.