4 ms·

I don't know much about this but I'd be keen to hear what alternatives to rockets there would be on the moon to get off the rock? Are you implying one-off balli

• abecedarius 5y ago
  Throwing and catching are reversible operations, like a regenerative brake in an electric car. Even if your tech is too crude for a regenerative catcher, at the throwing end you could still finesse the rocket equation with a https://en.wikipedia.org/wiki/Mass_driver https://en.wikipedia.org/wiki/Mass_driver See also https://en.wikipedia.org/wiki/Skyhook_(structure) https://en.wikipedia.org/wiki/Skyhook_(structure)