For two weeks, Donald Trump has welcomed Elon Musk into his world. On Tuesday, it was Musk’s turn to play host to the president-elect.

SpaceX on Tuesday launched another Starship rocket, but passed up catching the booster with giant mechanical arms. Unlike ...

Elon Musk is the world’s richest person partly due to his companies’ impressive innovations. But his wealth is also due to government contracts and programs that affected his two main businesses – ...