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. If the deployment went smoothly, it should be possible for this search to begin within about a week. Marsis is able to see water up to 5km (3 miles) below the planet's surface. On Tuesday, mission controllers at the European Space Agency's operations centre in Darmstadt, Germany, released the...