Saturn’s moon Titan is one of the most fascinating bodies in the solar system, not least because it’s home to huge oceans, lakes and rivers of liquid methane. Now scientists have used radar to probe the composition and depth of its largest sea, Kraken Mare, and estimated it to be at least 300 m (1,000 ft) deep.
Titan is shrouded in a cloudy atmosphere of nitrogen, making it difficult to see the surface. So NASA’s Cassini spacecraft, which orbited Saturn between 2004 and 2017, was equipped with radar to get a better look at the ground. And the resulting images revealed a surprisingly Earth-lik