Experts suggest much of the water Mars once had is now contained in minerals.

We answer some common questions about the American Perseverance rover mission to Mars.

The American space agency says its Perseverance robot is lined up perfectly for its mission at Mars.

The biggest, most sophisticated vehicle ever sent to land on another planet

Nasa's Perseverance rover is the first wheeled robot to be sent to Mars with the direct objective of searching for life.

Putting a robot safely on Mars is always an immense challenge, however many times you've done it.

Three thousand days and counting: Nasa's Curiosity rover continues its extraordinary exploration of Mars.

Noctilucent, or "night-shining", clouds can be seen on Mars, just as they are on Earth.