Live coverage: Delta 2 launches

Launching the commercial WorldView 4 Earth-imaging satellite for DigitalGlobe, a United Launch Alliance Atlas 5 rocket thunders away from California’s Vandenberg Air Force Base today at 10:30 a.m. local time (1:30 p.m. EST; 1830 GMT).

An Indian radar observation satellite designed to collect information on natural disasters, pollution and monitor the military activity of India’s neighbors lifted off at 4:55 a.m. EST (0955 GMT) Wednesday on top of a Polar Satellite Launch Vehicle, the second PSLV mission in two weeks.

The Falcon 9 booster that dramatically flew back to Earth last month following a commercial satellite launch ignited again Friday in a hold-down test at SpaceX’s Cape Canaveral launch pad, days before the company is due to launch its next mission from California, officials said.