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24 March 2015, 06:01 PM ET
The golf-cart-size Opportunity rover has now traveled 26.219 miles (42.195 kilometers) — the distance of a marathon race — since touching down on the Red Planet in January 2004, NASA officials announced today (March 24).
24 March 2015, 04:28 PM ET
NASA's Kepler mission team will receive the Smithsonian National Air and Space Museum's 2015 Trophy for Current Achievement. Tom Krimigis of the Johns Hopkins University's Applied Physics Lab, will get the museum's Lifetime Achievement award.
24 March 2015, 02:32 PM ET
NASA's New Horizons' principal investigator Dr. Alan Stern talks to Space.com about the importance of the mission to the "wild west" of our solar system, a place where no other probe has been.
24 March 2015, 01:00 PM ET
Triton's surface is so cold, the ground is made of frozen nitrogen.
24 March 2015, 01:00 PM ET
An American astronaut is about to embark on the mother of all space missions. NASA's Scott Kelly is getting ready to fly up to the International Space Station Friday (March 27) for a yearlong mission that will test his endurance like never before.
24 March 2015, 01:00 PM ET
Neptune's moon Triton has some unique properties among the moons of the solar system, which could make it an interesting location for a space colony.
24 March 2015, 12:40 PM ET
Slated to start at the end of March 2015, NASA astronaut Scott Kelly will spend a year aboard the International Space Station.
24 March 2015, 11:00 AM ET
The International Space Station now plays host to an experiment that could help scientists unlock the mysteries of Alzheimer's disease.
24 March 2015, 07:38 AM ET
Researchers working on NASA's New Horizons mission, which will zoom through the Pluto system on July 14, are asking the public to propose and vote on names for geological features the probe will identify on Pluto and its largest moon, Charon.
24 March 2015, 07:30 AM ET
The debris from the military weather satellite that exploded in orbit last month doesn't pose a threat to any nearby ESA missions, the agency says.
24 March 2015, 07:13 AM ET
A software upgrade has restored the use of Opportunity's flash memory, just in time for the rover to complete its Mars marathon. Opportunity will reach the mileage milestone after just another 47 yards (43 meters) of driving.
24 March 2015, 01:32 AM ET
What do we actually mean by research and how does it help inform our understanding of things?
23 March 2015, 05:52 PM ET
Retro art by the French artist Invader has turned up on the International Space Station and European Space Agency ground installations. See photos of the Space Invaders-inspired artwork on Earth and in space.
23 March 2015, 05:49 PM ET
Cosmic detectives are investigating a case of mistaken stellar identity: CK Vulpeculae, an exploding star that was once known as the oldest recorded nova — a nuclear explosion in space — was more likely caused by the merger of two stars.
23 March 2015, 05:05 PM ET
European Astronomers witnessed what they thought was a Nova in the constellation of Vulpecula in 1670.
23 March 2015, 03:59 PM ET
Mars Express is the European Space Agency's first spacecraft to fly to another planet.
23 March 2015, 03:48 PM ET
NASA's Scott Kelly and cosmonaut Mikhail Kornienko will kick off the first yearlong International Space Station mission when they launch to the orbiting outpost on March 27, 2015.
23 March 2015, 03:01 PM ET
Nitrogen was available on ancient Mars in a form that microbes could have used to build key biomolecules, and atmospheric carbon monoxide has been a feasible energy source for life throughout the Red Planet's history, two new studies suggest.
23 March 2015, 03:01 PM ET
Jupiter may have acted like a giant wrecking ball in the newborn solar system, roaming in to destroy an early generation of inner planets before retreating to its current orbit, researchers say.
23 March 2015, 02:03 PM ET
Just about two hours into Gemini 3, NASA's first two-man spaceflight 50 years ago, John Young reached into his spacesuit's pocket and pulled out a surprise. "Where did that come from?" replied Gus Grissom, Gemini 3 commander.
23 March 2015, 01:07 PM ET
Chad Blakley (lightsoverlapland.com) captured unusual arcing auroras forming a corona over Abisko National Park on Mar. 14th, 2015.
23 March 2015, 10:12 AM ET
NASA's Mojave Volatiles Prospector (MVP) is placing a suite of instruments to detect water on the Earthly desert surface. This testbed will fine tune designs for future probes to Mars, the Moon and other solar system bodies.
23 March 2015, 07:40 AM ET
Once an aerospace engineer who dreamed of going to space, Matt Armbruster is now the CEO of High Roller, a company that makes adult tricycles that resemble the Big Wheel bikes for children.
23 March 2015, 07:35 AM ET
What do actor Ed Harris, comic strip beagle Snoopy, astronaut Jack Swigert, and James Bond have in common? A new chronograph celebrating the 'successful failure' of Apollo 13 45 years ago.
23 March 2015, 07:00 AM ET
An American astronaut and two cosmonauts are set to fly up to the International Space Station Friday (March 27), and two of those crewmembers won't be back on Earth for about a year on a mission that aims to help open the doorway to deep space for Earthli
22 March 2015, 04:08 PM ET
An eclipse passed through the sky in part of the world, a major solar storm rained down on St. Patrick's Day, and "Christmas lights" were seen on Mars. Here are Space.com's picks for the best space stories of the week.
22 March 2015, 08:14 AM ET
As darkness falls tonight (March 22), be sure to take a look low toward the western part of the sky for yet another beautiful celestial tableau formed by a lovely crescent moon and the brilliant planet Venus.
21 March 2015, 07:32 PM ET
The semi-taboo Titus-Bode relation could provide useful hints about the periods of as-yet-undetected planets around other stars.
21 March 2015, 04:00 PM ET
From St. Patrick's day in space to a spectacular solar eclipse, don't miss these amazing space images of the week for March 21, 2015.
21 March 2015, 11:40 AM ET
The online project Spaceprob.es is a one-stop-shop website for learning about all the human-made space probes currently studying the cosmos, and features sharp graphic designs of all the probes, available as posters and stickers.
20 March 2015, 08:39 PM ET
A total eclipse of the sun on Friday thrilled skywatchers across Europe, Africa and Asia where it was visible, but nowhere was the view as perfect as in the air aboard a chartered jet soaring over the top of the world.
20 March 2015, 02:00 PM ET
Watch live Friday (March 27) as a crew of three launches to the International Space Station. Two of the crewmembers will spend one year on the orbiting outpost.