Video: OA-7 Cygnus freighter arrives at its orbital destination

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.

SpaceX launched a Falcon 9 rocket Friday at 5:39 p.m. EDT (2139 GMT). The commercial booster is hauling up the Thaicom 8 television broadcasting satellite from Cape Canaveral. The rocket’s first stage successfully landed on SpaceX’s recovery platform in the Atlantic Ocean.

Astronauts Randy Bresnik and Mark Vande Hei headed outside the International Space Station Thursday on a spacewalk to replace one end of the lab’s Canadian-built robotic arm, a changeout that engineers say will restore the device to full capability.