SpaceX CEO Elon Musk suggested on a Wednesday episode of Senator Ted Cruz's podcast that while humans may not find living aliens on Mars, they could uncover the "ruins of a long-dead alien civilization" when they arrive on the planet—potentially within the next five years.

SpaceX's Starship has, once again, exploded — and Elon Musk does not seem to be taking it well at all. After investor and avowed Tesla hater Dan O'Dowd poked fun at the billionaire for setting off a "huge fireworks display for the Caribbean" when Starship's eighth test flight ended in a spectacular explosion,

Musk—who has a history of setting unrealized goals for his companies—says he wants to send humans to Mars by 2029, though he says 2031 may be more likely.