The European Space Agency has approved a mission to Jupiter’s moons to discover whether fish live under their icy surfaces. The mission will send a five-tonne satellite to the solar system’s biggest planet to study three of its largest moons – Callisto, Europa and Ganymede.
These are of special interest because beneath their icy surface it is thought they might have vast oceans. Scientists believe this makes them one of the most likely places in the solar system to harbour alien life, possibly even fish.
The spacecraft would use the planet’s gravity to fly around the moons in the hope of discovering whether they host microbial life. The mission is due for launch in 2022 and would arrive in the Jupiter system around 2030.