Asteroids that come close to Earth are called Near-Earth Objects and scientists believe that comets and asteroids probably delivered some of the water and other ingredients on the planet.
The asteroid, which is about 1 kilometre in diameter and 2.5 times the height of the Empire State Building in the US, has been dubbed potentially hazardous.
The asteroid, which is about 1 kilometre in diameter and 2.5 times the height of the Empire State Building in the US, has been dubbed potentially hazardous.