Anonymous ID: b23d36 June 18, 2018, 9:56 a.m. No.1798482   ๐Ÿ—„๏ธ.is ๐Ÿ”—kun

>>1798372

getting out of Earth gravity well is the most expensive part of going anywhere

 

if we have a moon base where we can assemble or manufacture things, the moons gravity well can actually be used to help fling a ship outward