Stats: Atlas 5 and Delta 4 histories and backlogs (updated April 20)

NASA astronauts Nick Hague and Drew Morgan completed a 6-hour, 32-minute spacewalk outside the International Space Station Wednesday to help connect a newly-arrived docking port to the orbiting research outpost.

Air Force meteorologists are expecting good weather to launch the Delta 4 rocket with a military communications satellite when the sun goes down Friday evening at Cape Canaveral.

The world’s highest capacity broadband satellite, a craft that will connect rural America to high-speed Internet service, successfully rocketed into space today aboard a United Launch Alliance Atlas 5 booster.