Solar System

When the Artemis mission lands on the Moon, its crew will have to grapple with a challenging environment and extreme isolation. What will it take to thrive in a lonely Moon base?

Astronauts orbiting the Earth are drilled to deal with the worst possible scenarios. That includes having to leave a doomed space station – quickly.

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission arriving in 2026 might solve the mystery.

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.

From creation myths to political omens, different cultures have had vastly different interpretations of the dramatic natural phenomenon.

These strange objects could explain how water arrived on Earth, but may also be a previously unrecognised threat to our planet. Now, a spacecraft is headed towards one to investigate.

Many stars in our galaxy exist in pairs. Now scientists are finding clues that our Sun may once have had a companion of its own. The question is, where did it go?