400 Million New Stars in Our Galaxy!

The video discusses the Gaia space observatory's mission to create a detailed map of the Milky Way, revealing new stars and settling astronomical debates. It also covers the discovery of why Pluto's moon Charon has a red pole, due to tholins formed from Pluto's atmosphere. Lastly, it mentions a SpaceX Falcon 9 rocket explosion during a test.

What new insight or understanding did you gain from this video?