Chasing Geotail and Martian Impacts

The Mars Insight lander detected an impact that produced a stadium-sized crater on the red planet, and the 30-year magnetospheric mission Geotail comes to an end. An experiment deep underground on Earth helps explain the puzzling composition of some of the oldest stars, and we explore the future of eclipses in our trivia. Catch up on all this, the latest space news, and more.