In 2024, NASA's Perseverance rover spotted an arrowhead-shaped rock in Mars's Jezero Crater some 1 metre x 0.6 metres (3.2ft x 2ft) in size, coated with what look like colourful ‘leopard spots’. These patterns, NASA reported, might have been deposited by microbial life. Perseverance, along with its predecessor Curiosity, remain our best chance of uncovering ‘groundtruth’ evidence of life on Mars, if it ever existed.
Beyond Mars, NASA's Europa Clipper, launched in 2024, is on course to reach Jupiter's icy moon in 2030, where it will seek further evidence of its putative ocean, assess its habitability and help pinpoint landing sites for future surface missions. Europe's Juice, also launched in 2024, will probe Callisto, Europa and Ganymede with radar, laser altimetry and magnetometry.
Set to launch in 2028, NASA's Dragonfly…