SpaceThat interstellar asteroid could be a shard of a shredded planet 'Oumuamua, an oddly shaped asteroid from beyond our solar system, recently passed by. It may have formed when a planet was ripped into fragments by its star News
SpaceGiant loner asteroids suggest baby planets formed quickly The oldest intact asteroids hint that planets didn’t grow by slowly gathering small space rocks, but came from rapidly collapsing dust News