Live coverage: Ariane 5 blasts off on commercial flight

The European Space Agency’s Aeolus winds observatory is set for liftoff aboard a Vega rocket to kick off a three-year mission to measure global wind profiles from an orbit nearly 200 miles (320 kilometers) above Earth.

The U.S. military’s next GPS navigation satellite was ready for launch from Cape Canaveral at 9:43 p.m. EDT Friday (0143 GMT Saturday) aboard a SpaceX Falcon 9 rocket. But SpaceX aborted the countdown just two seconds prior to liftoff.

Closing out a banner year of launches, an Ariane 5 rocket thundered into space Wednesday from French Guiana with two commercial communications satellites manufactured in California to expand television and broadband access in Latin America and broadcast television programming in Japan.