Photos: Atlas 5 rolls out for launch

The first piloted test flight of Boeing’s CST-100 Starliner commercial crew capsule has been delayed to early 2018 as designers wrestle with the mass of the spacecraft, aerodynamic loads the vehicle will see during launch, and new software requirements levied by NASA, company officials said.

Another countdown for United Launch Alliance’s next Delta 4-Heavy rocket mission ended without a liftoff Wednesday after a computer sequencer detected a potential problem just before engine ignition.

Launching for the 50th time, an Atlas 5 rocket flew a milestone mission Wednesday in deploying a Global Positioning System satellite for the worldwide utility.