Ahhhahaha, did you have at that time
The European Space Agency's Sentinel-3 satellite (Source: ESA / ATG medialab)
The European Space Agency (Die ESA faces the prospect of the second launch of the Sentinel-3 satellite, which is scheduled to land on a Russian Rockot launcher tonight.
The spacecraft will fly into space at 1757 UTC on April 25 from the Plesetsk Cosmodrome in northern Russia Boarding of older reconstructed intercontinental ballistic missile (ICBM)
A newer upper stage, the Briz-KM, will place Sentinel-3B in its 81
Sentinel-3B joins its brother Sentinel -3-3A , which was launched as part of the European Commission's Copernicus program in February 2016.
Copernicus is a monitoring program that focuses on oceans and monitors the temperature, color, and elevation of the sea surface e of the sea ice can measure thickness. Over land, the satellite duo is used to track land use, measure the height of rivers and lakes, and monitor forest fires and vegetation.
The identical Sentinel 3A and B satellites weigh 1,150 kg and are expected to last for seven years (although the pair contains enough consumables to last 12 years if nothing important breaks and funding continues to flow).
A constellation of two satellites will lead to a worldwide coverage of land and ocean color instruments every two days.
Rockot, which can bring up to 2,140 kg in the near-earth orbit, based on the venerable SS-19 ICBM.
Rockot's record is relatively good and has recorded 24 successful launches since his move from Baikonur to Plesetsk in 2000.  ESA will try not to worry too much about the 2005 CryoSat launch aboard Rockot, where a second-tier failure due to a programming error in the upper tier of Briz-KM resulted in a big bada boom.
Boffins ended waiteli until the start of CryoSat-2 in 2010 on board a Dnepr carrier from Baikonur.
The Briz-KM has a difficult history, with subsequent mistakes in relocating a Russian Geo IK-2 satellite into a much less-than-planned 2011 orbit and a botched deployment in 2013, involving a Russian communications satellite and two others are in the wrong orbit.
With 10 achievements since the last outage, including Sentinel-3A, confidence is high that Sentinel-3B will successfully join siblings in orbit. ®
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