The Inspiration4 crew safely returned to Earth Saturday evening after three days of orbiting the planet. It is the first all-civilian mission to orbit.

The harvest moon is the last full moon of the summer. This year it will appear to be full for three days with peak illumination occurring at 7:54 p.m. ET Monday.

Hubble's iconic images captured the public's imagination. Will NASA's next big space telescope, which sees infrared light, produce astronomy scenes that pack a similar punch?

The first all-civilian space mission into orbit is expected to take flight from Kennedy Space Center on Wednesday evening. Private company SpaceX is running the mission — not NASA.

Marking the latest step in the commercialization of space, the SpaceX mission set to launch Wednesday will carry four civilians, including a billionaire CEO, a physician assistant and a geoscientist.

Delays in multiple parts of the program — including holdups in developing new spacesuits — put the 2024 goal out of reach, NASA's inspector general says.

In April, NASA chose Elon Musk's SpaceX to receive a highly sought-after $2.9 billion contract. It would involve the first spacecraft to land humans on the moon since 1972.

A NASA mission to a potentially dangerous asteroid has let researchers map out its future trajectory like never before.

A tiny satellite made by startup Geometric Energy Corp. will display advertising on its side that will then be livestreamed back to Earth.

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.