The NASA TV broadcast of the launch of an Atlas 5 rocket carrying the Orbital ATK Cygnus cargo ship bound for the International Space Station on March 22, 2016. (Membership Required)

The U.S. Air Force’s fourth new-generation SBIRS missile warning satellite is headed for geosynchronous orbit after lifting off from Cape Canaveral at 7:48 p.m. EST Friday (0048 GMT Saturday), after a one-day delay caused by a troublesome fill-and-drain valve.

Flying on autopilot more than 200 million miles from Earth, NASA’s OSIRIS-REx spacecraft is on track for a daring touch and go landing on an asteroid Tuesday to grab a sample for return to scientists eager to scan the specimens for clues about the history of the solar system.