A message has been sent to Earth from a spacecraft orbiting Mars, to simulate potential communication from an advanced alien civilisation.
On 24 May, a spacecraft at Mars, the Trace Gas Orbiter (TGO), was used to send a coded message – just a few kilobytes in size – to our planet. Picked up by radio receivers on Earth, groups of astronomers and enthusiasts then set to work decoding it, a potential dry run …