NEW: President Trump announces NASA is working on a nuclear-powered interplanetary spacecraft set to launch on a mission to Mars in 2028. "This ship will be am

NEW: President Trump announces NASA is working on a nuclear-powered interplanetary spacecraft set to launch on a mission to Mars in 2028. "This ship will be among the first of what will ultimately be a massive American Star fleet, making space travel almost as common as ocean travel today." [▻](ht…