Launch of the Curiosity Mars rover

A United Launch Alliance Atlas 5 rocket with a new type of solid rocket booster emerged from its hangar Tuesday evening for the 1,800-foot rollout to pad 41 at Cape Canaveral, moving into position for liftoff Wednesday with a classified National Reconnaissance Office payload.

A Soyuz spacecraft undocked from the International Space Station on Thursday to bring home NASA flight engineer Jessica Meir, astronaut Andrew Morgan and Russian commander Oleg Skripochka. The Soyuz MS-15 spacecraft departed the station at 9:53 p.m. Thursday (0153 GMT Friday) and landed on the steppes of Kazakhstan at 1:16 a.m. EDT (0516 GMT).

Former astronaut Al Worden, who orbited the moon and performed the first spacewalk in deep space in 1971, died Wednesday in Texas. He was 88.