SpaceX
- Watch SpaceX try to skim Earth's orbit with its Starship rocket on Saturday.
- The last time the mega-rocket was tested, it blasted a crater in its launchpad and blew up midair.
- Starship is SpaceX's most ambitious project and crucial to Elon Musk's plans to put a city on Mars.
SpaceX wants to test its fully-stacked Starship again on Saturday after its first flight ended in a fireball.