The 98-meter rocket will attempt to send an empty crew capsule into a far-flung lunar orbit, 50 years after NASA's famed Apollo moonshots.

Crews are working around the clock at a NASA rocket factory, intent on meeting a new fall 2020 deadline to test launch a mega-rocket designed to propel astronauts to the moon and beyond.

The Japanese fashion tycoon who signed up to fly around the moon with SpaceX says he's not concerned with Elon Musk's Twitter-related troubles.