NASA has been watching the six tonne satellite closely. Officials yesterday moved up their prediction for its arrival to Friday, September 23, give or take a day.
Nasa scientists have calculated the satellite will break into 26 pieces as it gets closer to Earth. The odds of it hitting someone anywhere on the planet are one in 3,200.
The heaviest piece to hit the ground will be about 159kgs (350 pounds) but no one has ever been hit by falling space junk in the past.
Nasa expects to give the public more detailed information early next week. For now, all continents except Antarctica could be hit by satellite debris.