Images of the Apophis asteroid are currently being streamed live on Slooh.com.
There is a one in 25,000 chance the asteroid could hit the Earth in 2013.
More top news
Researchers believe they have found the wreckage of British explorer James Cook's ship "Endeavour".
Four kittens have been rescued from a fire by emergency services in California, USA.
A mother died after trying to save her three-year-old son when he fell down a cliff during a family hike.