Astrophysics Lecture 8: Where Are The Aliens?

Where are they? Do they exist or are we alone? The great debate was set up years ago by what is called the Fermi Paradox. You won't find the answer here, but you'll discover the range of disciplines (from astrophysics to geology and social science) that are considered to explain the aliens' lack of evidence so far.

The presentation's informal language makes it very accessible; as a bonus, there is also a pdf version with slides in white background for printing.

15 slides + pdf 

Enjoy the reading!