Video: Orion launch replays

The rollout of the 322-foot-tall rocket took fewer than 12 hours after first motion, which occurred at about 12:20 a.m. EDT (0420 UTC). NASA hopes to launch the crewed test flight to the Moon no earlier than April 1.

The Trump administration is requesting $25.2 billion for NASA in fiscal 2021, a 12 percent increase that includes $3.3 billion to kickstart development of a human-rated lander for the Artemis moon program. Nearly half of the budget request, $12.3 billion, is devoted to new and ongoing projects focused on the return to the moon and eventual flights to Mars.

NASA’s heavy-lifting mega-rocket and its ground support systems at Kennedy Space Center in Florida will not be ready for launches until at least mid-2018, even with extra funding approved by Congress, the space agency’s senior human spaceflight official told lawmakers.