Boom: DART, Volcanoes, and Supernovae

There are lots of explosions in this episode, beginning with the upcoming planned impact of the DART mission into a teeny-weeny asteroid to test planetary protection techniques. Then we take a look at some nifty detective work about a volcanic explosion on Mars, and finally, astronomers may have found the pre-smoking gun that lets us know when a star is about to go supernova.