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.

Now that Cassini has met its end by plunging into Saturn, it's time to reflect on what we've learned over the decades.

The groundbreaking Saturn mission has come to an end, protecting Saturn's moon in its final plunge.

In what's being called its 'grand finale,' the probe that's been orbiting Saturn for 13 years is taking its victory lap as it runs out of fuel.

Forty years and counting! Can Voyager 1 make it another 10?

When you're packing for space, you have to think about how every single item onboard can be reused repeatedly. And that includes your pee.

A newly discovered exoplanet is hotter than most stars, and may be possibly disintegrating because of it.

Hints of Einstein's general relativity have been detected in a black hole "laboratory" smack in the center of the Milky Way.

Get ready for a new branch in our galaxy's planetary family tree.

Could humans really colonize Mars within the next 50 years? Elon Musk seems to think so.

NASA's newest astronauts-in-training will have to learn how to fly a jet and speak Russian. It's going to be a long two years.

Thanks to gravitational wave observatories, we're entering a new era of astronomy, one in which the dark universe will finally be revealed.

Researchers used laser-plasma-based accelerators to simulate the sort of radiation that astronauts and spacecraft might encounter in outer space.

And that actually might pose a problem when it comes to the search for life on other planets.

If we're going to colonize Mars, we're going to need to figure out how to live off the land. Martian soil might be strangely suited for that task.

Plus, we throw in one reason to get excited anyway.

The "virtual telescope" is first getting up close and personal with Sagittarius A*, the supermassive black hole at the center of our galaxy.

European scientists are inviting gamers to become citizen scientists, sifting through real astronomical data to spot undiscovered planets orbiting other stars.

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.

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

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

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.

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?

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.

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

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.