• News Feeds
Page last updated at 07:52 GMT, Thursday, 4 August 2011 08:52 UK

Earth's 'two moon' mystery

Advertisement

Scientists working on a new theory have suggested that the earth once had two moons, but that they collided to form one.

The man behind the theory, Erik Asphaug from the University of California at Santa Cruz, describes how another moon may have been "squashed flat" in a cosmic collision.


Get in touch with Today via email , Twitter or Facebook or text us on 84844.

SEE ALSO

Story Tools

BBC navigation

BBC © 2013 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.

Americas Africa Europe Middle East South Asia Asia Pacific