Explore the vast reaches of space and mankind’s continuing efforts to conquer the stars, including theories such as the Big Bang, the International Space Station, plus what the future holds for space travel and exploration.

Astronaut John Glenn, the oldest human to ever travel to space, has died at age 95. He had a lot of adventures, both on this planet and off, before he did though.

NASA researchers say they may have made a breakthrough with electromagnetic drive propulsion, but other scientists have their doubts.

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?

Saturn's largest moon Titan is the only other celestial body we know of that has liquid lakes on its surface. NASA has just captured some amazing footage of clouds.

The rings of Saturn, Uranus and Neptune may be remnants of smaller planets destroyed long ago by the gas giants' powerful gravity.

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.

How could Phobos withstand the impact that created such a large crater without simply shattering into pieces? A new mathematical investigation answers that question.

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.

Cosmic radiation gave the fictional Fantastic Four superpowers, but in real life it could destroy an astronaut's mind, a new study shows. NASA's already on the defense.

Asgardia's going to start small, as in one satellite small, but the proposed nation has big plans.

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.

Imagine if we could get to Mars in 40 days instead of seven months! It could happen if we used plasma rockets, which travel at 34 miles per second. But how do we make this a reality?

Who says Mars is just for astronauts? Not Elon Musk. He wants to send you to the red planet for a few hundred grand in a spiffy carbon fiber spacecraft.

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

The European Space Agency's Gaia satellite observatory has created a 3-D model of the Milky Way — and beyond! — that charts more than a billion stars.

According to some predictions, the Tiangong-1 facility is out of the Chinese government’s control. Is a devastating re-entry in the station’s future?

NASA scientists say solar eruptions could have played a role in creating not only friendly environments, but also the building blocks of life itself.

In the HI-SEAS project, scientists lived together in cramped isolation on Hawaii, simulating the kind of challenges that would bedevil interplanetary explorers

It's been a busy week for SpaceX. On Tuesday, the company announced its first customer for its reusable rockets. On Thursday, a SpaceX rocket and its payload blew up.

The sun's atmosphere is actually hotter than its surface, even though you'd assume the surface is what generates all that heat. How does that work?

And guess what? Proxima b, our nearest rocky exoplanet cousin, is in the all-important habitable zone, too.

NASA's solar-observation satellite IRIS spotted an instance of this powerful natural electromagnetic phenomenon, and caught it on video.

NASA's Spot the Station feature will text or email you when the ISS is about to be overhead. And you won't even need a telescope to see it!