LAST TOWN BEFORE MARS: A senior executive at SpaceX is going door-to-door in South Texas to convince people to move out of the rocket company's planned Mars spaceport

· SpaceX, the rocket company founded by Elon Musk, is trying to build a private spaceport in Boca Chica at the southern tip of Texas and one day launch missions to Mars from the site using a system called Starship.
· But first, the company is trying to buy out a nearby neighborhood of retiree-age residents called Boca Chica...