Live coverage: Orion lands in Pacific

SpaceX test-fired its next Falcon 9 rocket at NASA’s Kennedy Space Center on Saturday in preparation for the company’s 17th launch of the year, a mission tentatively set for liftoff Wednesday with a secretive payload named Zuma for the U.S. government.

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).

NASA’s inaugural Orion spaceship has set sail on a two-orbit, four-hour shakedown cruise around the Earth, leaving port atop a United Launch Alliance Delta 4-Heavy rocket and its incandescent power at 7:05 a.m. EST on Dec. 5.