Nasa's Grail gravity twins set to orbit Moon


Nasa says its two probes designed to unravel the mysteries of the moon are on schedule to start their orbit.

Nasa's Grail spacecraft are expected to give scientists remarkable new insights into the internal structure of the lunar body. Khalid Javed 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.