The Spaceship Propulsion Compendium

An in-depth survey of the various technologies for spaceship propulsion, both from those we can expect to see in a few years and those at the edge of theoretical science. We'll break them down to basics and familiarize ourselves with the concepts.
Note: I made a rather large math error about the Force per Power the EmDrive exerts at 32:10, initial tentative results for thrust are a good deal higher than I calculated compared to a flashlight.

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Cover Art by Jakub Grygier:
https://www.artstation.com/artist/jakub_grygier

Project Rho:
http://www.projectrho.com/public_html/rocket/

More on VASIMR from Ad Astra:
http://www.adastrarocket.com/aarc/

Mars Society:
http://www.marssociety.org

Robert Shawyer explains EmDrive:
https://www.youtube.com/watch?v=wBtk6xWDrwY

Icarus Interstellar:
http://www.icarusinterstellar.org