There is a one in 250,000 chance that asteroid Apophis could hit Earth in 2036.
The asteroid, which is slowly approaching earth tonight will allow experts to examine risk, of how likely it is to hit.
Slooh, a web based sky service, collects images from observatories around the world.
Members of the public can view the event online via their website.
More top news
A parent who drove at a teacher because he wouldn't allow access to the school car park, carrying him on his bonnet, has been jailed.
Bernard Morgan may be 93 but he cycles every day and shows no sign of stopping or serving his community and country any time soon.
Lavinia Woodward attacked her Cambridge-educated partner at her university accommodation in December last year.