LIGO

Image: Carnegie Institution for Science

Gravitational waves from two colliding neutron stars 130 million million light-years away were detected recently, and this cosmic event has sparked an astronomy revolution. The Sky  Crew returns to explain what the cosmic tells us about how heavy elements like gold, platinum and uranium were formed,  and what it means for the future of astronomy.  We check in on how NASA is improving the odds of identifying habitable exoplanets, plus another discovery, a "quasi-satellite." And we look at a Planet Nine conspiracy theory!