Live coverage: 400th Proton rocket takes off with Russian satellite

Russia launched a military communications satellite Wednesday, sending a data relay and broadcasting station to an orbit more than 22,000 miles above the equator aboard a Proton rocket and a Breeze M upper stage.

SpaceX is preparing this week for the second flight of the upgraded “Block 5” version of the company’s Falcon 9 rocket, and a hold-down firing of the booster was accomplished Wednesday at Cape Canaveral ahead of a middle-of-the-night launch this weekend with a Canadian-owned commercial communications satellite. The static fire test occurred at 5 p.m. EDT (2100 GMT) Wednesday.

A Russian-built Soyuz booster lifted off Friday from the European-run spaceport in French Guiana, carrying four new broadband Internet satellites to orbit to join the O3b network owned by SES. Launch occurred at 1710:06 GMT (12:10:06 p.m. EST).