Q&A with Andrew Driesman, project manager for Parker Solar Probe (members only)

NASA announced Monday that the launch of the first operational crew rotation mission to the International Space Station on SpaceX’s Crew Dragon spacecraft is set for the predawn hours of Halloween, eight days later than previously planned.

Orbital ATK’s Minotaur-C rocket, formerly known as the Taurus, has launched for the first time in six years from Vandenberg Air Force Base in California. The solid-fueled launcher lifted off with 10 commercial Earth-imaging satellites at 2:37 p.m. PDT (5:37 p.m. EDT; 2137 GMT) Monday.

A hold-down test-firing of a Falcon 9 rocket Friday at Cape Canaveral marked a major step in preparations for SpaceX’s 13th mission of the year, scheduled for liftoff Monday with a commercial communications satellite.