SpaceWe could find advanced aliens by looking for their space junk If there are alien civilisations as technologically advanced as us, we could possibly find them by looking for rings of orbiting satellites around their worlds News
SpaceJupiter’s icy moon Europa has a hidden ‘conveyer belt’ of heat Frigid Europa may be warmed by a layer under its crust that moves heat and ice to and from its poles – and alien microbes could be hitching a ride News