Mars landings: How many landings on Mars?

Nasa's Perseverance has touched down on the Martian surface.

It is the biggest and most sophisticated vehicle ever sent to land on another planet.

China's Tianwen-1 will attempt a similar feat in May or June.

The US and the former Soviet Union are the only countries to successfully land on the Red Planet, though more have sent spacecraft to enter Mars' orbit.

Science reporter Laura Foster looks back at 60 years of successes and failures.