As SpaceX prepares to launch its Starship megarocket on a mission it calls "flight 13," here's a look back at the previous 12 ...

Satellites that are retired in orbit have to undergo passivation, a process that reduces the chances of them exploding.

As Elon Musk's SpaceX prepares for the 13th flight test of its massive Starship rocket, here's everything you need to know ...