 Between Mars and Jupiter, however, gravitational perturbations from Jupiter imbued the protoplanets with too much orbital energy for them to accrete into a planet.Collisions became too violent, and instead of fusing together, the planetesimals and most of the protoplanets shattered.As a result, 99.9% of the asteroid belt's original mass was lost in the first 100 million years of the Solar System's history.