Skyscraper-sized asteroid to pass within 1.7m miles of Earth on Friday

Nasa says it will be a harmless flyby by the giant rock, one of several near-Earth objects slated to swing by the planet this week

An asteroid as big as a skyscraper will pass within 1.7m miles (2.7mkm) of Earth on Friday.

Don't worry: there's no chance of it hitting us since it will miss our planet by seven times the distance from the Earth to the moon.