Video: Atlas 5 GPS 2F-8 Launch Highlights

NASA has selected SpaceX and United Launch Alliance to deliver to orbit a joint U.S.-European oceanography mission and the next land imaging satellite in the Landsat series on Falcon 9 and Atlas 5 rockets.

A new satellite launched Aug. 1 has joined the U.S. Air Force’s GPS navigation network to help guide everything from bombs to road trippers to their destinations, with final preparations on track to send up another GPS spacecraft at the end of October.

Delays have set up the possibility of up to three rocket launches this weekend from different pads along Florida’s Space Coast, including two SpaceX missions on Sunday that could set a company record for the shortest span between two Falcon 9 rocket launches. But in the world of ever-changing launch schedules, numerous factors such as weather and technical issues could thwart launch plans this weekend.