Earthlings may want to look up on Wednesday as an old Nasa satellite is set to fall to Earth - and there is a one in 2,500 chance it could land on someone’s head.
The Reuven Ramaty High Energy Solar Spectroscopic Imager, known as Rhessi for short, is set to plummet back to the planet’s surface on Wednesday night after 21 years in space.
Its exact point of re-entry has not been made public by Nasa or the US Defence Department, and most of the 300kg satellite should burn up as it enters the planet’s atmosphere.
