Media playback is unsupported on your device

'Don't panic': One-tonne satellite falling to Earth

9 November 2013 Last updated at 21:19 GMT

A one-tonne satellite is falling out of control and is likely to crash into the Earth sometime during the weekend, scientists have warned.

The Gravity Field and Steady-State Ocean Circulation Explorer was launched in March 2009, to study changes in sea level, ocean circulation and the planet's gravitational field.

It has now run out of fuel and is spiralling back to Earth.

The European Space Agency says it cannot predict exactly where, or when, but that it is highly unlikely to cause any casualties.

Tim Allman reports.

Copyright © 2015 BBC. 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.