Video: Liftoff of Atlas 5 rocket to deploy Navy’s MUOS 4 satellite

Follow the key events of the Soyuz rocket’s ascent into orbit from the Guiana Space Center with the first COSMO-SkyMed Second Generation, or CSG 1, radar observation satellite, the European Space Agency’s CHEOPS exoplanet telescope, and three CubeSats.

After three frustrating days of weather delays, the United Launch Alliance Atlas 5 rocket blasted off from Cape Canaveral at 4:44 p.m. EST (2144 GMT) today to send Orbital ATK’s commercial Cygnus cargo freighter to the International Space Station.

A United Launch Alliance Atlas 5 rocket fired into the night sky over Cape Canaveral just after midnight Wednesday, carrying the U.S. Air Force’s fourth AEHF communications satellite designed to enable secure voice, video and data links between U.S. and allied forces.