What the heck is a Space Force? We finally (sort of) know.
Slow but steady sun-powered spacecraft could transform space travel
The new era of space strategy
If Sierra Nevada can't build its vehicle, no one else can.
PopSci is at the launch site with fingers crossed
The ISS is fine, don't worry
Everything is awesome!
The agency's new GIPHY page is a delight
Earth's orbit is becoming dangerously crowded with space junk.
We all like having options.
Divest from Russia, with love
In 1966, the Air Force sent an uncrewed space station into orbit
You don't need a rocket to leave Earth. There's a slower, gentler trip in the works—and it comes with a cocktail.
The leak has been repaired, but its origins remain mysterious.
The simplest explanation is also the likeliest.
Chasing the cheapest way to get into orbit
A controversial bill would give companies the right to own natural resources in space, and it may pass in the Senate by the end of September
ISS commander Scott Kelly presents his playlist