Photos: Tuesday’s Atlas 5 rollout

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.

Nearly two days after launching from Cape Canaveral, SpaceX’s Dragon cargo craft arrived at the International Space Station on Saturday with more than 5,000 pounds of supplies, food, experiments and a new docking mechanism. Astronauts aboard the station captured Dragon using the Canadian-built robotic arm at 9:11 a.m. EDT (1311 GMT).

The next-to-last Delta 2 rocket is being stacked at its California launch site to take flight in January to put a civilian weather satellite into polar orbit.