A big NASA satellite will crash back to Earth on Tuesday (March 10) after nearly 14 years in orbit, experts say.

A more than1,300-pound (600kg) Van Allen Probe spacecraft is expected to re-enter Earth's atmosphere almost 14 years after its launch, Nasa says.

"By reviewing archived data from the mission, scientists study the radiation belts surrounding Earth, which are key to predicting how solar activity impacts satellites, astronauts, and even systems on...