Live coverage: Soyuz test flight concludes with landing 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 commercial Cygnus freighter made a science-enabling delivery to the International Space Station today, bringing about 7,500 pounds of cargo to the outpost under NASA’s privatized logistics shipment program.

American and Soviet crews were launched today in 1975 for the first handshakes in space between the two superpowers as part of the Apollo-Soyuz Test Project.