Far Future Rocket Engine Technologies - Fission, Fusion & Antimatter
In my NSWR video I used Kerbal Space Program to visualize the operation of this awesome engine in an imaginary future, this came from a free, fan created mod which covered a whole host of future engine concepts - Far Future Technologies by Nertea.
The mod is available for the latest version of Kerbal Space Program, and I suggest looking at the other mods produced by the same creator covering a number of other space technologies not in the base game.
https://forum.kerbalspaceprogram.com/index.php?/topic/199070-111x-far-future-technologies-jan-7/
These designs and many more are covered in much more detail by Winchel Chung's Atomic Rockets website which is an invaluable resource if you're interested in realistic science fiction futures
http://www.projectrho.com/public_html/rocket/
Other Videos By Scott Manley
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Kerbal Space Program Statistics For Scott Manley
At present, Scott Manley has 163,762,633 views spread across 872 videos for Kerbal Space Program, with His channel uploaded over 15 days worth of Kerbal Space Program videos. This makes up 41.14% of the content that Scott Manley has uploaded to YouTube.