Live coverage: Atlas 5 countdown and launch journal

Delays have set up the possibility of up to three rocket launches this weekend from different pads along Florida’s Space Coast, including two SpaceX missions on Sunday that could set a company record for the shortest span between two Falcon 9 rocket launches. But in the world of ever-changing launch schedules, numerous factors such as weather and technical issues could thwart launch plans this weekend. 

Getting off to a ground-shaking start, NASA’s $1.2 billion Psyche asteroid probe roared into space atop a Falcon Heavy rocket Friday, setting off on a 2.2-billion-mile voyage to a rare, metal-rich asteroid that may hold clues about how the cores of rocky planets like Earth first formed.

Boeing specialists working inside a former space shuttle hangar in Florida started fueling the company’s first spaceflight-ready Starliner capsule this week ahead of the ship’s rollout to its launch pad later this month. The fueling milestone is a major step in the Starliner launch campaign, and comes after engineers concluded that human error led to a parachute deployment malfunction during a crew capsule abort test Monday.