SpaceX is poised for its next Starship megarocket test flight on Tuesday, with US President-elect Donald Trump expected to witness the second ever attempt to catch its descending booster stage in the launch tower's "chopstick" arms.

SpaceX is scheduled to launch its sixth uncrewed test flight of Starship on Tuesday to expand the massive 400-foot rocket's booster capabilities and bring its "catch and reuse" launch system online.

Starship is designed to send humans back to the moon and, eventually, take them to the planet Mars. Once SpaceX is given government clearance to launch Starship, it will be used for a Polaris Dawn civilian mission and NASA’s Artemis III human-moon mission.