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

A high-power Russian satellite designed to deliver broadband Internet connections and relay television and videoconferencing signals fired into orbit Wednesday from the Baikonur Cosmodrome in Kazakhstan.

A European environmental satellite launched Tuesday from Russia’s Plesetsk Cosmodrome to begin a mission of at least seven years measuring the height, color and temperature of the world’s oceans. The Sentinel 3A spacecraft lifted off aboard a Rockot booster at 1757 GMT (12:57 p.m. EST).

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).