Live coverage: Soyuz blasts off on third mission for O3b

A pair of Air Force surveillance satellites headed to geosynchronous orbit today to reconnoiter the high ground, departing Cape Canaveral aboard a United Launch Alliance Delta 4 rocket at 12:52 a.m. EDT (0452 GMT). It is the 375th Delta rocket flight since 1960.

Two days after lifting off from Florida’s Space Coast, a Dragon cargo capsule packed with more than 6,400 pounds of research experiments and crew supplies arrived at the International Space Station on Wednesday. Astronaut Jack Fischer used the station’s robotic arm to grapple the supply ship at 6:52 a.m. EDT (1052 GMT).

A three-man crew led by six-time space flier Yuri Malenchenko rode a Soyuz rocket into orbit Tuesday, speeding away from a Kazakh launch pad on a six-hour chase of the International Space Station. Docking occurred at 1733 GMT (12:33 p.m. EST).