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Space Exploration

Space exploration is a broad topic covering many facets of deep-space and planetary science. Learn about space probes, Mars Rovers, SETI and other out-of-this-world subjects.

Lunar Landings Over the Decades

Explore the historic space voyages, technology and people that have shaped 50 years of NASA.

5 Secrets About the Soviet Space Program

After the Soviet Union launched Sputnik I in 1957, the space race was on. And what followed was decades of secrecy that dominated its space program. See more »

NASA Study Discovers 'Space Gene' and More

The first results are in from two groundbreaking NASA studies. What they show could have huge impacts on the future mission to Mars. See more »

Stephen Hawking Plans to Send Tiny Nanocraft to Alpha Centauri

Hawking is working with NASA and a few high rollers to send a tiny, unmanned spacecraft to our closest star system. See more »

Getting Rid of the Right Stuff: The NASA Space Poop Challenge

The space agency is looking for your help in figuring out how to get rid of astronauts' bodily waste. And there's $30,000 in it for you if your idea wins. See more »

Could Our Spacecraft Accidentally Ignite an Alien World's Entire Atmosphere?

Outer planets in our solar system have atmospheres made up of flammable chemicals that can cause explosions on Earth. Could a rocketship, or electric spark, ignite them? See more »

Earthlings Crowdsource the Search for Martian 'Spiders'

Earth's next-door neighbor has a lot of weird geological formations, like spiders, to map, but only so many scientists who can do it. That's where you come in. See more »

Can You Have a Baby on Mars?

Elton's always maintained that Mars ain't the kind of place to raise your kids. Is he right? See more »

Comet Strike Could Explain PETM, Earth's Apocalyptic Ancient Climate Spike

Ten million years after the dinosaurs, a comet strike altered the climate, research shows, causing the PETM extinction event. We're affecting Earth in similar ways today. See more »

Let's Celebrate Rosetta After Its Crash-landing in a Comet Pit

The historic spacecraft Rosetta ended its mission today of studying comet 67P. Along the way, it taught us a few things about how our solar system may have begun. See more »

Jupiter's Moon Europa Erupts Water Vapor (Maybe)

And suggestions of water elsewhere in the solar system are always pretty darn exciting. See more »