The Space Cannon

This Gun Could Reach Space https://www.youtube.com/watch?v=W4EMf_MTXVc

https://interestingengineering.com/science/jules-vernes-space-gun

The Space_gun started out as just another science fiction concept.

https://interestingengineering.com/innovation/space-cannon-hypersonic-speeds

https://newatlas.com/space/greenlaunch-space-cannon-gas-launch/

https://space.stackexchange.com/questions/2370/what-technological-hurdles-prevent-the-development-of-a-space-gun