The second in the two-satellite Sentinel-1 radar mission is targeted for launch on Soyuz flight VS14 from Europe’s Spaceport in Kourou, French Guiana, on 25 April at 23:02 CEST (21:02 GMT)
The launch was originally planned for 22 April but weather conditions and a technical issue delayed liftoff.
Streaming from Kourou starts at 22:40 CEST (20:40 GMT).
Sentinel-1 is the first mission for Europe’s Copernicus environment monitoring programme. It carries an advanced radar to provide all-weather, day-and-night images of Earth’s surface.
The Sentinel-1B satellite is ready to be launched on a Soyuz rocket from Europe’s Spaceport near Kourou in French Guiana.
The launch of Sentinel-1B also provides an opportunity to give other smaller satellites a ride into space. Three CubeSats will be carried on the Soyuz rocket. They were developed by teams of university students through ESA's ‘Fly Your Satellite!’ programme run the Education & Knowledge Management Office in collaboration with European universities. The other satellite that is piggybacking a ride is Microscope from the French space agency, CNES.