Astronaut

The International Space Station (ISS) is humanity's most expensive object and has been in orbit for 25 years. Read its fascinating history, told in 25 numbers.

Deep inside a Swiss mountain, a group of students spent some of the summer simulating what life might be like inside a lunar base. The BBC joined them before the "mission".

In 1978 Nasa announced 35 new astronauts for a new era of spaceflight – and six of them were women. Here's how the Space Shuttle programme chipped away at one of Nasa's blind spots.

The first Space Shuttle was originally going to be named Constitution. US President Gerald Ford agreed to rename it Enterprise – here's how Star Trek fans persuaded him.

In 1975, a meet-up between American and Soviet spacefarers in orbit showed that the superpowers could work together. Its positive effects led to the International Space Station.

When astronauts land on the Moon again as part of the Artemis project, they will have to build a place to live in. Nasa wants them to build as much of it they can from used materials.

The two Nasa astronauts overstaying on the ISS aren't the first to be stuck in space… and they probably won't be the last.