3 ms·How on earth do you do on-orbit refueling? I've never heard of that outside of science fiction.by spuz 6y agoHow on earth do you do on-orbit refueling? I've never heard of that outside of science fiction.nieksand 6y agoThough this is really a tug rather than propellant transfer: https://www.space.com/private-satellites-docking-success-northrop-grumman-mev-1.html https://www.space.com/private-satellites-docking-success-nor... But not so sci-fi.mkoryak 6y agoyou don't do it on earth :)