Photos: Atlas 5 rocket soars from West Coast

A rocket engine that could power United Launch Alliance’s next-generation rocket has passed a major design review, clearing the way for full-scale hotfire testing starting next year and certification for test flights in 2019, according to Aerojet Rocketdyne, the powerplant’s developer.

The launch of five commercial Iridium message relay satellites and a pair of U.S.-German orbiting geophysics probes on a Falcon 9 rocket from California has been delayed three days to May 22, and a week-long schedule slip to May 31 is expected for the next SpaceX flight from Cape Canaveral with an SES communications payload.

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.