The second satellite in ESA’s Earth Explorer series – the Soil Moisture and Ocean Salinity (SMOS) mission – and the second demonstration satellite under ESA’s Project for Onboard Autonomy (Proba-2) were launched into orbit last night from northern Russia. SMOS will play a key role in the monitoring of climate change on a global scale. It is the first ever satellite designed both to map sea surface salinity and to monitor soil moisture on a global scale. It features a unique interferometric radiometer that will enable passive surveying of the water cycle between oceans, the atmosphere and land.

Travelling piggyback on the launch of SMOS, Proba-2 is a follow-on to the highly successful Proba-1 satellite launched in 2001. It will demonstrate 17 advanced satellite technologies –such as miniaturised sensors for ESA's future space probes and a highly sophisticated CCD camera with a wide angle view of about 120º – while carrying a set of four science instruments to observe the Sun and study the plasma environment in orbit. Read More