Stunning New Images Of Rhea Herald More Photos Of Saturn's Icy Moons

For nearly two years, the orbital path of NASA's Cassini spacecraft has limited the mission's encounters with Saturn's moons. These newly released photos of the icy moon Rhea mark the spacecraft's return to the planet's equatorial plane, realm of the ringed world's frozen satellites. » 3/30/15 3:58pm Today 3:58pm

No, NASA Is Not Planning To Build A Space Station With Russia

This past weekend, the head of Roscosmos announced plans to build a new orbital space station in partnership with NASA to replace the aging International Space Station. Too bad it isn't true. » 3/30/15 7:40am Today 7:40am

Opportunity Rover Has A Film Noir Moment In This Shadowy Shot From Mars

This shot shows the Opportunity rover in shadow on Mars, facing Endurance Crater. It was taken in 2004, the year Opportunity began exploring; since then, it's completed the equivalent of a marathon across Martian terrain, discovering evidence of ancient water, and snapping memorable images galore. » 3/29/15 11:00am Yesterday 11:00am

Man Plus Has The Kookiest And Therefore Greatest Plan To Colonize Mars

Between Mars One sounding fishy and Curiosity finding nitrogen, Mars is back in the news (if it ever really left). There's still an interest in colonizing "The Angry Red Planet," but that's still a long way off from happening. I can only presume that's because the folks at NASA and the other space exploration… » 3/28/15 11:15am Saturday 11:15am

Year in Space For Russian-American Crew Begins With Spectacular Launch

The first ever 'One-Year Mission' to the International Space Station (ISS) started with a bang March 27, with the spectacular nighttime launch of the Russian/American crew from the Baikonur Cosmodrome in Kazakhstan, and culminated with a flawless docking. » 3/28/15 10:15am Saturday 10:15am

All Hail Opportunity Rover, Future Martian Terror

Back in 2010, XKCD's Randall Munroe devoted a surprisingly moving webcomic to Spirit, NASA's ill-fated and ultimately abandoned Mars rover. Today's comic is about Spirit's twin, the apparently indomitable Opportunity, and its tone is markedly less sentimental. » 3/27/15 4:40pm Friday 4:40pm

Watch Today's Historic Launch To The ISS, Live Right Now!

Today at 12:42 p.m. PDT/3:42 p.m. EDT, NASA astronaut Scott Kelly is scheduled to begin his year-long journey to the International Space Station — a voyage which, if successful, will surpass the U.S. record for longest-duration human spaceflight by more than 100 days. » 3/27/15 12:20pm Friday 12:20pm

This Is What Happens When Dark Matter Collides With Itself

What happens when dark matter crashes into itself? Some new Hubble observations show that it's not what researchers thought — and that may have some implications for telling us just what dark matter really is. » 3/27/15 10:40am Friday 10:40am

The Truth Behind The Million Dollar Space Pen Hoax

There's a famous legend that America spent millions on the development of a "Space Pen" that writes upside down, while the Russians used a pencil. Here's the truth behind the legend. » 3/27/15 9:30am Friday 9:30am

On Friday, asteroid 2014-YB35 is expected to make its closest approach to Earth. Traveling at over 23,000 mph (37,000 km/h), NASA says the 6.2 mile (1,000 meter) asteroid won't get any closer than 2.7-million miles (4.4 million km). That's nearly 12 times the distance from Earth to the Moon – so relax. » 3/26/15 2:40pm Thursday 2:40pm

What Destination In Space Do You Most Want To See?

We're building better rockets, taking longer trips, and learning a whole lot more about the places in space we've already managed to visit. So where do you want to go next? » 3/26/15 7:20am Thursday 7:20am

Why the Length of Saturn's Day Is So Hard to Measure 

The length of a planet's day seems like such a simple number, a basic piece of information that should accompany any solar system diagram. But probes flying past Saturn have turned up oddly conflicting numbers. » 3/25/15 5:00pm Wednesday 5:00pm

How To Fly A Spaceship To The ISS: Orbital Mechanics And A Fancy Stick

How do astronauts get from Earth to the International Space Station? Well, in a Soyuz spacecraft, of course. But do you know what kind of path the Soyuz takes to rendezvous with humanity's orbital outpost? It's probably not what you think. » 3/25/15 1:20pm Wednesday 1:20pm

Curiosity Just Found A Key Component For Life On Mars

While running a standard sample analysis of some Martian dust, the Curiosity rover made a wonderful discovery — there is nitrogen, one of the essential ingredients for life, on Mars. » 3/25/15 9:20am Wednesday 9:20am

It Only Took NASA 11 Years To Run A Marathon On Mars

The Mars Exploration Rover, better known as Opportunity, has been beaming back images and data from our planetary neighbour since 2004. As as of today, it has travelled 26.219, making it the first little interplanetary explorer to complete a marathon. » 3/25/15 1:00am Wednesday 1:00am

As It Turns Out, We Really Are All Starstuff

"The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars," Carl Sagan famously said in his 1980 series Cosmos. "We are made of starstuff." » 3/24/15 10:00am 3/24/15 10:00am

The ESA Wants To Clean Up Space Trash Using These Fishing Nets

How will we clean up the giant (and steadily increasing) trash vortex that swirls around our little blue planet? Perhaps by harpooning it with these space fishing nets. » 3/24/15 9:20am 3/24/15 9:20am

Jupiter May Have Destroyed The Solar System's First Planets

It is becoming increasingly obvious that our Solar System — with its inner collection of small rocky planets and an outer region buffeted by gas planets — is quite uncommon. According to a remarkable new study, the reason may have to do with Jupiter and an ancient migratory journey that kickstarted the destruction of… » 3/24/15 8:00am 3/24/15 8:00am

Here's Your Opportunity To Help Name The Features Of Pluto And Charon

In July, New Horizons will pay a visit to Pluto and Charon. The historic flyby is expected to reveal surface features of these objects in extraordinary detail. Now, NASA and the SETI Institute, along with the International Astronomical Union, want your help naming these features. » 3/23/15 1:40pm 3/23/15 1:40pm

After Pluto, Where Will NASA's New Horizons Go?

Scientists are mulling over which of two icy bodies NASA's New Horizons spacecraft should visit following its Pluto encounter this summer — provided the U.S. space agency comes up with funding for an extended mission. » 3/22/15 9:30am 3/22/15 9:30am