A SpaceX rocket is on a collision course with the moon after launching a pair of lunar landers last year. Space tracking experts say the upper stage will unintentionally slam into the moon on Wednesday. The high-speed impact will carve out a crater and send up a plume of dust and rubble that scientists and skygazers are eager to observe. The eastern portions of the U.S. and Canada, and much of South America, should have the best views. SpaceX’s abandoned rocket stage hoisted a pair of private lunar landers in January 2025 and has been drifting ever since.