Live coverage: Europe’s Mars mission launches

Researchers have found remnants of ancient ice sheets buried up to a mile below Mars’ northern polar cap, a record of seasonal climate change on the red planet.

Bright, frosty polar caps, and clouds above a vivid, rust-coloured landscape reveal Mars as a dynamic seasonal planet in this NASA/ESA Hubble Space Telescope view taken on 12 May 2016, when Mars was 50 million miles from Earth. The image reveals details as small as 20 to 30 miles across. On 30 May, Mars will be the closest it has been to Earth in 11 years.

NASA’s Perseverance Mars rover snapped a selfie showing the robot geologist and the diminutive Ingenuity helicopter on the surface of the red planet as engineers ready the drone for an initial 90 second test flight.