It's not yet known whether the hydrogen leak encountered Monday will impact the moonshot's eventual launch date.

SpaceX halted Falcon 9 launches for a week while it investigated that issue, which was traced to a fuel leak in one of the booster's nine Merlin engines. This leak led to a fire shortly after ...

Russia has historically been a trailblazer when it comes to space exploration. It was the first to put a human into space in 1961 with Yuri Gagarin. It led the way for the first spacewalk and had the ...