A giant asteroid will only just miss earth later this year, according to NASA.
The huge rock, dubbed YU55, will pass within 201,700 miles of our planet in November.
If it crashes into earth the impact would be equivalent to 65,000 atomic bombs, while the crater would be six miles wide and 2,000 ft deep.
The asteroid, which weighs 55 million tons and is 1,300ft wide, will be the largest ever object to get so close to our planet. It orbits the sun every 14 months.