21 May 2015, 09:19 AM ET
In situations where sunlight is not available, like shadowed craters, its been a challenge to supply power to spacecrafts, landers and rovers. The space agency is looking into nuclear systems as an alternative.
20 May 2015, 02:00 PM ET
A Swedish university student has created a design for an "International Flag of Planet Earth" that could be planted on planets during future human exploration. The banner depicts seven interlocked circles, symbolizing the unity of all people.
18 May 2015, 04:24 PM ET
An innovative concept for tiny probes attached to gliders could one day allow small robots to explore intricate locales on Mars that probes never could reach before, scientists say.
17 May 2015, 09:17 AM ET
From the coast of Japan to a dragon selfie, don't miss these amazing space images of the week for May 17, 2015.
15 May 2015, 11:01 AM ET
Settling Mars could help humanity escape and mitigate the problems our species is facing here on Earth, several science-fiction authors said.
15 May 2015, 07:00 AM ET
"Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future," by tech journalist Ashlee Vance, will be released on May 19. But you can get a sneak peak at the book now, via a lengthy excerpt published Thursday (May 14) on Bloomberg.com.
12 May 2015, 07:30 AM ET
A new study suggests that Mars has lost the equivalent of an ocean's worth of water over the past four billion years. However, the question of whether Mars was ever warm enough to have hosted such an ocean has sparked debate.
11 May 2015, 05:00 PM ET
Mars One CEO Bas Lansdorp and astronaut-selection chief Norbert Kraft dispute allegations by a former astronaut candidate that the colonization effort judges its applicants unfairly and is unable to finance itself.
11 May 2015, 12:00 PM ET
Curiosity captured the images, which mission team members combined into a Martian sunset video, with its Mast Camera between dust storms on April 15, NASA officials said.
10 May 2015, 09:05 AM ET
Russia's failed Progress 59 cargo spacecraft fell back to Earth, SpaceX's Dragon crew capsule launched on its first big test and the sun fired off its most powerful flare of 2015 so far. Here's a look at Space.com's top stories of the week.
08 May 2015, 09:46 PM ET
From espresso in space to a green and gold aurora, don't miss these amazing space images of the week for May 10, 2015.
08 May 2015, 04:50 PM ET
Andy Weir, author of the acclaimed novel 'The Martian,' stopped by NASA's Johnson Space Center in Houston recently and took the new Modular Robotic Vehicle for a test ride. See the photos here.
08 May 2015, 02:44 PM ET
The space-funding company Uwingu is offering a special deal: Name a Mars crater from now through Sunday (May 10), and you get a Mother's Day certificate (a digital version or a printed-out, framed one).
08 May 2015, 07:00 AM ET
An incremental, multiple-mission approach — which envisions getting astronauts to Phobos by 2033, then down to the Martian surface by 2039 — could make manned Mars exploration technologically and economically feasible.
07 May 2015, 04:19 PM ET
To prepare for future colonies on Mars, NASA is asking the public for ideas on how to keep Red Planet astronauts safe with minimal resupplies from Earth.
06 May 2015, 06:30 AM ET
Despite skepticism from Congress concerning NASA's asteroid-capture project, space agency chief Charles Bolden said "consensus is emerging" about that mission and other steps in NASA's plan to send humans to Mars.
06 May 2015, 06:00 AM ET
Could water have carved channels on Mars as recently as 500,000 years ago? If that's the case, it would boost the case for relatively recent life on the Red Planet.
05 May 2015, 07:00 AM ET
A new photo captured by NASA's Mars rover Opportunity shows a rocky spire in a shallow crater on the Red Planet. The mosaic combines images taken by Opportunity's panoramic camera on March 29 and March 30.
04 May 2015, 04:42 PM ET
Mice zapped with cosmic rays can incur brain damage, suggesting that astronauts' mental performance could suffer over time on deep-space missions to Mars and beyond, researchers say.
04 May 2015, 09:44 AM ET
When Charles Limoli and colleagues exposed mice to a single beam of extremely concentrated radiation, the rodents’ brain cells’ dendrite became damaged.
01 May 2015, 06:00 AM ET
Johann-Dietrich Wörner expressed his enthusiasm for a moon colony at the Space Foundation's National Space Symposium, a gathering of global, commercial, civil, military and "new space" experts that was held here from April 13 to April 16.
30 April 2015, 07:00 AM ET
The search for life beyond Earth homes in on water, whose unique properties make it critical to life as we know it and whose abundance throughout the solar system is becoming increasingly clear to scientists.
27 April 2015, 01:47 PM ET
A research team has published some intriguing work in Nature Geoscience regarding transient liquid water and water activity at Gale crater on Mars – the exploration zone of NASA’s Curiosity rover.
24 April 2015, 10:45 AM ET
NASA's Mars Reconnaissance Orbiter captured a photo on April 8 that shows the car-size Curiosity rover cruising through a valley called Artist's Drive in the foothills of Mount Sharp.
24 April 2015, 07:00 AM ET
A study of Yellowstone's hot springs has revealed new clues about how organic materials might get preserved in similar environments on the Red Planet, bettering our chances of finding possible signs of life.
22 April 2015, 01:01 PM ET
There are two interesting but challenging events in the night sky this week: a close conjunction of the two smallest planets, and a chance to observe at least one asteroid close to the moon.
19 April 2015, 09:20 AM ET
SpaceX nearly pulled off an unprecedented rocket landing during a cargo launch to the International Space Station and NASA's New Horizons probe returned its first color image of Pluto. Here's a look at Space.com's top stories of the week.
18 April 2015, 01:20 PM ET
From the first color image of Pluto to an awesome new SpaceX Video, don't miss these amazing space images of the week for April 19, 2015.
17 April 2015, 07:00 AM ET
A 208-foot-long (65 meters) drive on Thursday (April 16) pushed the car-size Curiosity rover's odometer past 10 kilometers (6.21 miles), NASA officials said.
13 April 2015, 01:01 PM ET
Liquid water likely lurks just below the surface of Mars on cold winter nights, according to new research. Is it enough to support microscopic life-forms?
12 April 2015, 11:01 AM ET
About 90 employees of NASA's Jet Propulsion Laboratory in Pasadena, California, ran a marathon-length relay around the facility's grounds on Thursday (April 9) to celebrate the Opportunity rover's Mars marathon.
12 April 2015, 09:34 AM ET
From a cosmic garden to fishing for space junk, don't miss these amazing space images of the week for April 12, 2015.
09 April 2015, 06:04 PM ET
Martian astronauts will need to be able to withstand the reduced gravity and increased radiation in deep space. And they'll have to find a way to deal with the boredom, experts say.
09 April 2015, 02:39 PM ET
NASA's Mars-studying MAVEN spacecraft notched a spaceflight milestone this week — its 1,000th orbit of the Red Planet. MAVEN arrived at Mars in September 2014 and began its yearlong prime science mission on Nov. 16.
07 April 2015, 04:50 PM ET
Solid signs of alien life will be spotted within 10 years, and definitive evidence will roll in within 20 to 30 years, NASA chief scientist Ellen Stofan said Tuesday (April 7).
06 April 2015, 02:30 PM ET
Crewmembers aboard the International Space Station have assisted in picking spots on Mars for investigation by the Opportunity robot now wheeling about on that distant world.