Europe is in the midst of launching the most thorough space-based environmental network ever deployed, with satellites to help officials respond to natural disasters, measure crop yield, monitor the health of oceans and ice caps, and track ozone in the atmosphere. Guido Levrini from ESA spoke to Spaceflight Now about the program on the eve of Sentinel 1B’s launch.

A pair of Earth-imaging satellites for the Italian military and a French-Israeli environmental monitoring project lifted off from French Guiana aboard a European Vega rocket at 0158:33 GMT Wednesday (9:58:33 p.m. EDT Tuesday).

Continuing a busy week of comings and goings at the International Space Station, a Russian Progress supply ship is set for liftoff at 0709 GMT (3:09 a.m. EDT) Wednesday from Kazakhstan with nearly 5,200 pounds of food, fuel and supplies for the six-person crew on the International Space Station.