There are no objects that regularly move between Mars and Jupiter. That space is the asteroid belt, and asteroids are generally locked in orbits around the Sun within that belt.

However, here are some things that *could* move between Mars and Jupiter:

* Spacecraft: We've sent many spacecraft to explore the asteroid belt, like the Dawn mission which visited Vesta and Ceres. These spacecraft travel between the two planets.

* Comets: While most comets originate in the outer solar system, some have orbits that bring them close to the Sun, potentially passing through the asteroid belt.

* Rogue asteroids: While rare, some asteroids can be ejected from the asteroid belt due to collisions or gravitational interactions. These could potentially travel between Mars and Jupiter, but their paths are unpredictable.

It's important to note that all of these are rare occurrences, and the asteroid belt is primarily populated by asteroids that remain within its boundaries.