A US Air Force satellite has exploded 450 miles above Earth 's surface . An unknown 'temperature spike ' caused the explosion . This has resulted in 43 new pieces of debris in Earth orbit . The Air Force said the loss of the satellite was not a major concern . And Nasa and Esa played down the risk to other satellites in orbit .
A US Air Force satellite has exploded 500 miles above Earth 's surface . An unknown 'temperature spike ' caused the explosion . This has resulted in 43 new pieces of debris in Earth orbit . The Air Force said the loss of the satellite was not a major concern . And Nasa and Esa played down the risk to other satellites in orbit .