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

Two American astronauts and one Russian cosmonaut boarded their Soyuz MS-06 landing craft for a homecoming Tuesday night, U.S. time, concluding 168 days in orbit. The trio undocked from the International Space Station at 5:08 p.m. EST (2208 GMT), and landed on the snowy steppe of Kazakhstan at 9:31 p.m. EST (0231 GMT Wednesday).

A decommissioned missile originally built in Russia to deliver nuclear weapons to intercontinental targets in the United States vaulted out of a vertical canister Friday and fired into space with a European satellite to monitor global air pollution.

A Delta 2 rocket lifted off from California’s Central Coast Saturday after back-to-back scrubbed launch attempts earlier this week. The Delta 2 delivered the JPSS 1 weather satellite to orbit for NOAA.