Propellant-less Space Travel with Tethers: Swimming in Space using an Asteroid’s Gravity Gradient

Gentaro Nakata

2021

The thesis demonstrates the possibility of propellant-less space travel with a tether, two masses separated by a variable length. By computer simulations, we show how to lengthen and shorten the tether to swim in space using the gravity gradient of a nearby asteroid, moon, or planet.