Add Yahoo as a preferred source to see more of our stories on Google. The sun sets behind NASA's Space Launch System rocket and Orion spacecraft at NASA's Kennedy Space Center in Florida on Jan. 31, ...

CAPE CANAVERAL, Fla. — NASA began another practice launch countdown Tuesday for its first moonshot in decades with astronauts after making repairs to fix dangerous fuel leaks that already have bumped ...

NASA has begun another practice launch countdown for its first moonshot in decades with astronauts. The first test was halted ...