Second Marsis radar boom deployed

[Rick]

The second of three radar booms has been deployed on Europe's Mars Express spacecraft - but it is unclear whether the operation has been successful.

The antennas are part of the Marsis instrument, which will look beneath the Red Planet's surface for what are expected to be vast reserves of water.

http://news.bbc.co.uk/2/hi/science/nature/4096102.stm