A prototype of the Space Exploration Technologies Corp. (SpaceX) Starship launch vehicle stands during an event at the SpaceX launch facility in Cameron County, Texas, U.S., on Saturday, Sept. 28, 2019. Elon Musk gave space fans an update Saturday evening on the status of "Starship," the next-generation vehicle his SpaceX plans to use to eventually take humans to Mars. Photographer: Bronte Wittpenn/Bloomberg via Getty Images
