Live coverage: Atlas 5 blasts off from California

Returning to the days of rollouts and launches in a span of only a few hours, the United Launch Alliance Atlas 5 program is looking to resume this whirlwind experience.

The final flight of a Delta 2 rocket, a mainstay of the U.S. launch industry for nearly 30 years, began at 6:02 a.m. PDT (9:02 a.m. EDT; 1302 GMT) from Vandenberg Air Force Base in California with NASA’s ICESat 2 Earth science satellite.

Military officials in charge of the Eastern Range at Cape Canaveral project more than 50 launches from Florida’s Space Coast this year, with SpaceX responsible for most of the launch activity, the vice commander of the 45th Space Wing said this week.