10 February 2014, 04:09 PM ET
A light-colored object on a dark background appears larger than a dark object on a light background, until recently, no one knew why. Now, a study suggests that a difference in how the brain's cells respond to light and dark could explain the illusion.
10 February 2014, 04:04 PM ET
The marks, known as recurring slope lineae (RSL), snake down some crater walls and other slopes when the mercury rises on the Red Planet. New research finds seasonal changes in iron minerals at RSL sites, suggesting that brines containing an iron antifree
10 February 2014, 02:54 PM ET
The constellation of 4 European Space Agency ‘Galileo' satellites, that will provide highly accurate global positioning to Europe, has passed its validation phase. The entire system will be 30 satellites - completion expected by 2019.
10 February 2014, 02:16 PM ET
See spectacular photographs of Earth from space by Japanese astronaut Koichi Wakata on the International Space Station during the Expedition 38 mission in 2013 and 2014.
10 February 2014, 12:10 PM ET
New images of galaxy Centaurus A, equivalent to a single Chandra X-Ray telescope exposure nearly 10 days long taken between 1999 and 2012, shows bright jets from a supermassive black hole. A dark dust lane is a fossil of an ancient galaxy collision.
10 February 2014, 11:52 AM ET
If your sky is clear tonight (Feb. 10), be sure to check out the southeast sky about an hour or so after sundown for an eye-catching site: Jupiter and the moon shining together. Weather permitting, stargazers can find the celestial meet-up on about halfwa
10 February 2014, 09:00 AM ET
Veteran astrophotographer John Chumack captured amazing images of a very active and massive sunspot on Feb. 3, 2014. See how he did it.
10 February 2014, 07:14 AM ET
By 2040 or so, astronomers will have scanned enough star systems give themselves a great shot of discovering alien-produced electromagnetic signals, said Seth Shostak of the SETI Institute.
10 February 2014, 06:59 AM ET
Worlds with twin suns like Luke Skywalker's fictional home world Tatooine in "Star Wars" may be born far from the stellar heart of their alien solar systems, scientists say.
09 February 2014, 12:10 PM ET
What was your favorite space news story of the last week?
09 February 2014, 09:00 AM ET
Night sky photographers Erwin Matys and Karoline Mrazek captured this amazing view of the young moon over El Hierro Island in the Canary Island. See how they did it here.
08 February 2014, 10:13 AM ET
Skywatchers have a lot to look up for in February 2014. Weather permitting, diligent observers should be able to spot a plethora of planets, comets and stars in the night sky this month.
07 February 2014, 08:41 PM ET
Interfacing with rovers, laptops and other tech needed to explore the Red Planet, while dealing with the confines of a spacesuit can be difficult. MarsCrew134's crew engineer Sue Ann discuss her research into the problem.
07 February 2014, 04:50 PM ET
See photos of Sochi, Russia, home of the 2014 Winter Olympics, from space, and see how the Olympic torch launched into space for a spacewalk relay in this SPACE.com gallery.
07 February 2014, 04:25 PM ET
The 2014 Winter Olympics officially begin with an extravagant opening ceremony today (Feb. 7), and even NASA has embraced the spirit of the games by snapping satellite views of Olympic venues from orbit.
07 February 2014, 04:18 PM ET
The 2014 Winter Olympic Games launched in Sochi, Russia, Friday (Feb. 7) using the torch that flew to the International Space Station. The space-themed spectacle, which took place as part of an elaborate opening ceremony, also had cosmonauts carry the Rus
07 February 2014, 02:02 PM ET
A spacewalker who lifted off a record seven times to orbit and the first American woman to complete a long-duration stay on board a space station will be inducted into the U.S. Astronaut of Hall of Fame, officials with the Florida institution announced.
07 February 2014, 01:49 PM ET
NASA's Messenger spacecraft is the first dedicated to orbiting Mercury, the solar system's innermost planet.
07 February 2014, 01:19 PM ET
The new world of tele-anesthesiology and tele-surgery is practiced in high altitude Utah by MarsCrew134. The crew's executive and medical officer Dr. Susan Jewell discusses.
07 February 2014, 01:00 PM ET
Dual payloads to broadcast television and broadband signals for Asia Broadcast Satellite and French and Italian security forces rocketed into orbit on an Ariane 5 rocket Thursday on Arianespace's landmark 250th launch.
07 February 2014, 12:31 PM ET
For much of the contiguous United States this winter has been marked by perpetual ice, snow as well as the now infamous polar vortex. Such conditions might make even the most committed stargazer think twice before venturing outdoors.
07 February 2014, 10:51 AM ET
A probe orbiting Mercury has beamed more than 200,000 images to ground controllers on Earth, and it's still going strong.
07 February 2014, 10:14 AM ET
Want to see the beauty of the northern lights, but don't want to sit out in the freezing cold? There's an app for that: A scientist is developing an app with real-time views of Alaska's auroras.
07 February 2014, 10:13 AM ET
Netherlands-based night sky photographers André van der Hoeven and Michael van Doorn teamed up created this breathtaking image of the Triangulum Galaxy. See how they did it here.
07 February 2014, 09:14 AM ET
Satellites snapped imagery of a surprisingly snow-less Sierra mountain range, painting a grim picture of the water prognosis for California. NASA scientists are investing the cause.
07 February 2014, 07:21 AM ET
The newest adopter of 3D printing isn't some hobbyist in a basement — it's NASA. The agency is already building some of its customized spacecraft and instrument parts using 3D printing.
07 February 2014, 07:12 AM ET
NASA astronaut Rick Mastracchio talks to Space.com's @MiriKramer about the Olympics from the International Space Station on Jan. 31st. 2014.
07 February 2014, 07:11 AM ET
Using data from the Hubble Space Telescope and other observatories, astronomers are learning why some massive galaxies hit their peak young and quit making stars when the universe was less than a quarter of its current age.
07 February 2014, 07:04 AM ET
Here’s a trick question for you: When is new moon this month? Stumped? The answer is, there is no new moon this February.
06 February 2014, 05:00 PM ET
The late news anchor Walter Cronkite, the planet-hunting Kepler space telescope and a hypersonic aircraft mission are among the people and projects being honored by this year's National Space Club awards.
06 February 2014, 04:59 PM ET
The torch traveled by car, plane, reindeer, and rocket ship to its ultimate goal of lighting the flame at the 2014 Sochi Olympics. NASA revisits the trip the torch took to the ISS in Nov. 2013.
06 February 2014, 04:27 PM ET
Two NASA astronauts on the International Space Station connected with the United States Olympic bobsled team in Sochi, Russia before the 2014 Winter Games kick off Friday (Feb. 7).