Live coverage: Atlas 5 countdown and launch journal

Relive all of the steps to stack the United Launch Alliance Atlas 5 rocket at Cape Canaveral’s Vertical Integration Facility for the Morelos 3 satellite deployment mission.

The first piloted test flight of Boeing’s CST-100 Starliner commercial crew capsule has been delayed to early 2018 as designers wrestle with the mass of the spacecraft, aerodynamic loads the vehicle will see during launch, and new software requirements levied by NASA, company officials said.

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.