And at night, there are familiar constellations, planets, the odd meteor or two, and satellites streaming overhead. These are all fun to see with your unaided eyes. But there are times when a little ...

Phil takes a look at the explosive history of our cosmic backyard. In today's Crash Course Astronomy, Phil takes a look at the explosive history of our cosmic backyard. We explore how we went from a ...

Last week’s episode of Crash Course dealt with stars in multiple systems: binaries, triples, quadruples, and more. Most stars in the sky are multiples! It turns out that stars can be in even bigger, ...

Phil gives the course a send off with a look at some of his favorite topics. Here it is, folks: the end. In our final episode of Crash Course Astronomy, Phil gives the course a send off with a look at ...