Replay: Atlas 5 launches missile warning satellite

A Chinese Long March 3B rocket delivered a new-generation tracking and data relay satellite to orbit Sunday to provide communications support for the country’s future human spaceflight missions and space station.

Launch of a SpaceX Crew Dragon capsule carrying four astronauts to the International Space Station has been delayed 24 hours to Friday because of bad weather in the Atlantic Ocean where the crew could be forced to ditch in an emergency, NASA announced Wednesday.

SpaceX has won an $80 million contract to launch a NASA environmental research satellite aboard a Falcon 9 rocket from Cape Canaveral in late 2022 to collect data on ocean ecosystems and clouds, a mission that the Trump administration wished to cancel.