Forty-eight episodes, more than eight hours of content, 100,000 words, a year and a half of work, topics ranging from quantum fluctuations to the death of the Universe, and 12 million views … finally, ...

One of the (many) reasons I wanted to make the Crash Course Astronomy series was to create a resource for people. The series is set up like a supplemental astronomy class covering the same sorts of ...

Binary stars are gravitationally bound together in the same system. Double stars are stars that appear to be near each other in the sky, but if they’re gravitationally bound together we call them ...

In 2011, brothers John and Hank Green created an educational YouTube channel called “Crash Course” with the goal of spreading high-quality educational videos for everyone, free of charge. A year later ...

Against all odds, this new show is going to make you love physics. After the Green brothers ended their much-beloved Crash Course Astronomy series in January, fans wondered what subject the duo would ...

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 ...