What are gravity-based propulsion methods?

Gravity-based propulsion methods are ways to move using gravity, like when you push a toy car and it keeps rolling because of how things fall.

Imagine you're on a slide at the park, when you go down, gravity helps you zoom. Gravity-based propulsion works in a similar way but for bigger things like spaceships or rockets.

When something uses gravity to move, it's like being on a really long slide that never ends. Instead of pushing yourself, the pull of gravity does most of the work. This is used when going from one place in space to another, like how astronauts use this method to travel between moons or planets.

Sometimes you need a little push to get started, just like when you need a friend to give your toy car a nudge. But once you're moving, gravity takes over and keeps you going smoothly, like riding down that slide all the way to the bottom, no more pushing needed!