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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, 12:18 PM ET
Molecular nitrogen – one of the key ingredients that put together the young solar system – has been found on a comet by the European Space Agency's Rosetta spacecraft. See what the discovery means for our understanding of the planets and solar system.
20 March 2015, 12:13 PM ET
On Feb. 20, 2015, the planets Venus and Mars joined Earth's moon to create a dazzling sight in the night sky. See photos of the triple conjunction by Space.com readers in our gallery here.
20 March 2015, 12:00 PM ET
Astronauts hoping to sip drinks in style may soon have a cocktail glass concept to look forward to. The Zero Gravity Cocktail Project is aiming to create an open-top glass that can be used in microgravity, using an innovative "groove system" that would ke
20 March 2015, 11:30 AM ET
Astronauts on the International Space Station caught sight of an amazing solar eclipse today (March 20), and they have the photos to prove it.
20 March 2015, 07:31 AM ET
A rare total solar eclipse dimmed the skies above a small swath of the world today (March 20), creating an incredible sight for skywatchers lucky enough to be in the right place at the right time to see it.
20 March 2015, 07:00 AM ET
Astrophotographer Miguel Claro took the image from Juromenha, Dark Sky Alqueva Reserve, Portugal on Jan. 11, 2015.
20 March 2015, 06:50 AM ET
Look southward just after the sky gets dark at this time of year, and you will be sure to see Sirius shining brightly. This is the brightest star in the sky, and marks the eye of the constellation called Canis Major, Latin for "the Large Dog."
20 March 2015, 05:23 AM ET
On March 20, 2015, the moon blocked the sun as seen from Earth in a total solar eclipse. See photos from the only total solar eclipse of 2015 in this Space.com gallery.
20 March 2015, 01:34 AM ET
A bizarre crystal-like mineral recently found in a meteorite that crashed to Earth 15,000 years ago adds more support for the idea that the fragile structure can survive in nature. But how it formed at the beginning of the solar system is still a mystery.
19 March 2015, 10:31 PM ET
The ISS is the most complex scientific and technological endeavor ever undertaken.
19 March 2015, 06:36 PM ET
The delay was necessitated by a lack of investment funding, which has slowed work on a robotic precursor mission that Mars One had wanted to send toward the Red Planet in 2018, Mars One CEO Bas Lansdorp said in a new video that posted March 19.
19 March 2015, 05:15 PM ET
A fleet of European satellites will chase the only total solar eclipse of 2015 from space on Friday (March 20) in a bid to capture truly out-of-this-world views of the celestial event.
19 March 2015, 04:26 PM ET
A dark line more than half a million miles long curves across the lower half of the sun in a gorgeous photo snapped by a NASA spacecraft. The line — what scientists call a solar filament — is longer than 67 Earths lined up side-by-side.
19 March 2015, 02:01 PM ET
Giant dust clouds seen in the early universe may have been created by exploding stars, a discovery that suggests supernovas were prolific space dust factories for ancient galaxies, scientists say.
19 March 2015, 01:00 PM ET
For years, many astronomers thought planets around red dwarfs were probably uninhabitable. But recently, the thinking has begun to change.
19 March 2015, 12:00 PM ET
An unexpected leak of a chemical designed to tag complex organic molecules in samples collected by NASA’s Mars rover Curiosity appears to have serendipitously done its job.