1. Space Gun
A space gun is a method of launching an object into space using a large gun or cannons. Space guns provide a method of non-rocket space launch. It has been conjectured that space guns could place satellites into Earth's and could launch spacecraft beyond Earth's gravitational pull and into other parts of the Solar System by exceeding Earth's escape velocity of about 11.2 km/s or 40,320 km/h or 25,050 mph.
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