Live coverage: SpaceX supply ship returns to Earth

A 154-foot-long solid rocket booster will be ignited for two minutes Tuesday at a remote test site in Utah, wrapping up a series of five ground firings to prove the motor’s readiness for flight on NASA’s Space Launch System.

Boeing officials said Monday the company’s Starliner crew capsule will fly a second time without astronauts after software problems and other issues plagued a first test flight in December, preventing the ship from reaching the International Space Station.

The mission broke another record for SpaceX, marking the first time the company has achieved 14 launches in a single month. Liftoff happened Friday at 10:37 p.m. EDT (0237 UTC on Saturday).