The European Space Agency has launched a second radar satellite into the EU’s new Sentinel constellation.
Sentinel-1b was carried into orbit by a Soyuz rocket that flew out of Sinamary in French Guiana.
The new platform will monitor shipping lanes for pollution and icebergs, and survey land surfaces for evidence of subsidence – to name just three of the myriad applications for radar imagery.
Sentinel-1b will work alongside the 1a spacecraft, which was launched in 2014.
Operating in the same orbit but separated by 180 degrees, the pair will be able to map the entire Earth every six days.
This promises an avalanche of data – some five terabits per day – and both satellites are carrying laser communications systems to help get all the information to the ground.
The Sentinels are a flagship space project for the European Union, which has committed billions of euros to the endeavour.
The satellites fit into a programme the European Commission calls Copernicus, which draws together all sorts of data about the health of the Earth, not just from orbit.
Copernicus will support a multitude of services, ranging from air quality updates to crop-performance monitoring, from water-resource management to transport infrastructure planning.