The most ambitious private spaceflight to date was a total success—and it blazed a trail for others to follow.

"We are mission complete," Isaacman said after the spacecraft landed.

SpaceX's Polaris Dawn mission was a spaceflight for the ages. Here's what the historic mission was like from launch to ...

Spaceflight Associated Neuro-Ocular Syndrome, or SANS, impacts more than 70% of astronauts, causing what doctors think might ...

The mission was commissioned by billionaire Jared Isaacman, who made a fortune as the founder of Shift4 Payments, and did not ...

Two cosmonauts have set the record for the most days spent continuously aboard the International Space Station (ISS), ...

Spaceflight Associated Neuro-Ocular Syndrome, or SANS, impacts more than 70% of astronauts, causing– what doctors think might ...

The company gave the "chopstick" arms of its launch tower a workout recently to gear up for the big day. SpaceX is gearing up ...

The Spaceship Neptune-Excelsior performed its first uncrewed test flight soaring to an altitude of 100,000 feet marking a big ...

Two American astronauts have inadvertently been aboard the space station for much of the Russians' record-setting stay.

When NASA astronauts Suni Williams and Butch Wilmore blasted off from Earth back in June, there was no reason to believe they ...