Photos: Predawn launch of Atlas 5

A United Launch Alliance Delta 4-Heavy rocket climbed into space Sunday with NASA’s Parker Solar Probe on a daring mission to explore the atmosphere of the sun. Liftoff from Cape Canaveral occurred at 3:31 a.m. EDT (0731 GMT).

Blue Origin has conducted the first hotfire test of its BE-4 rocket engine in West Texas, a powerplant fueled by liquified natural gas and liquid oxygen that will power the company’s heavy-lift New Glenn rocket and perhaps United Launch Alliance’s next-generation Vulcan launcher, officials announced Thursday.

SpaceX technicians at Cape Canaveral are readying for the first launch of an upgraded Falcon 9 rocket configuration next week, a mission that will debut changes to make the launcher safer for astronauts and make it easier — and less expensive — for the company to reuse first stage boosters.