Elon Musk was expected on Tuesday to present an update on SpaceX's plan to launch missions to Mars ahead of a high-stakes Starship test flight later in the day. Musk, the world's richest person and a key supporter of U.

SpaceX's Starship experienced an uncontrolled re-entry and broke apart over the Indian Ocean during its latest test flight.

In the years ahead, Starship is due to play a pivotal role in transporting astronauts to the moon's surface and may one day ferry the first humans to Mars.