To reach the innermost planet in our solar system, this European space probe needs a little help from the gravity of Venus.

Would you like to spend a year pretending to live on Mars in a 1,700-square-foot space shared with three other people, in the interest of helping a future space mission? Good news: NASA is hiring.

Wipe the dust off your binoculars and extract the family telescope from the back of the closet: Saturn is about to put on its best and brightest show of the year — an act Jupiter will soon follow.

The second Mercury mission was going according to plan until the Liberty Bell 7 capsule sank in the ocean. NASA exonerated astronaut Gus Grissom, and two researchers now say they know what happened.

From "Woo-hoo!" to "Who wants a Skittle?" here's what Jeff Bezos and his crew said on their 10-minute Blue Origin flight to the edge of space.

The Amazon founder became the second billionaire this month to reach the edge of space — following Richard Branson, who rocketed there aboard a vessel made by his company Virgin Galactic.

The founder of Amazon, who stepped down as CEO this month, lifted off early Tuesday with three crewmates on the maiden flight of Blue Origin's New Shepard launch vehicle.

"There was cheering in the control center" when word came that NASA had brought a key computer back, says James Jeletic, the Hubble project's deputy project manager.

Passengers joining Jeff Bezos on the suborbital flight will include Oliver Daemen, 18, and Wally Funk, 82. Funk was older than Daemen is now back in the 1960s when she trained to be an astronaut.

The Perseids meteor shower has been called "The best meteor shower of the year." It peaks in mid-August.

Researchers say high tide flooding in U.S. coastal regions will become more frequent in the mid-2030s because of climate change, amplified by a routine wobble in the moon's orbit.

Richard Branson started Virgin Galactic 17 years ago to make space travel possible for his generation. This weekend he'll be on its first fully crewed test flight to space, beating Jeff Bezos by days.

Satellite imagery shared exclusively with NPR shows new buildings going up at a huge, remote airfield near an old nuclear test range.

It's a smackdown of one space monster by another: Scientists have made unprecedented observations of two black holes gobbling two neutron stars — among the weirdest space collisions ever detected.

When SpaceX opened its rocket factory and launch pad in South Texas, few locals thought it would morph into such a large operation. Now environmentalists are worried about the long-term effects.