How do astronomers make sense out of the vastness of space? How do astronomers make sense out of the vastness of space? How do they study things so far away? Today Phil talks about distances, going ...

Astronomy is weird. Everything we study is really, really far away. So far away really, that for most of history we didn’t know how far away they were. It was impossible to measure. But then some ...

Phil explains stars and how they can be categorized using their spectra. Today Phil's explaining the stars and how they can be categorized using their spectra. Together with their distance, this ...

The stars are not as they seem. The nearest one is tens of trillions of kilometers away, a distance so terrible that the might and power of Alpha Centauri is reduced to a faint spark that can be ...