Three massive asteroids are heading towards Earth with one the size of six double-decker buses is on the priority risk lists of the European Space Agency.
A flurry of asteroids have flown past the Earth in recent days as the US has announced plans to defend the planet against threats from space.
All of the space rocks have been called close approaches to Earth by the European Space Agency and there will be a further three set to go past in the early hours of Sunday morning.
