An ‘existential gamble’: Why some experts are worried as SpaceX gears up for next Starship test

The most powerful rocket system ever constructed is headed for its next test — using a version of the vehicle that has been at the center of a series of explosive missteps and failures. SpaceX said it is aiming to launch its Starship megarocket on an hour-long test flight as soon as 7:30 p.m. ET Su...