Project Orion
Concept
A historical concept for spacecraft propulsion using thermonuclear explosions.
Mentioned in 2 videos
Videos Mentioning Project Orion

Neal Stephenson: Sci-Fi, Space, Aliens, AI, VR & the Future of Humanity | Lex Fridman Podcast #240
Lex Fridman
A proposed nuclear pulse propulsion system for spacecraft, detailed by Freeman Dyson and collaborators, involving detonating atomic bombs behind a vehicle.

Interstellar Expansion WITHOUT Faster Than Light Travel
PBS Space Time
A historical concept for spacecraft propulsion using thermonuclear explosions.