According to Garvie, the mud ball is more than just a random pile of clay zipping through space. It’s a fragment of a larger body that was on its way to growing into a planet. A larger hot aggregate of cosmic material began to cool down, and effectively “fossilized” into a cold rock, disturbed by collisions with smaller rocks but staying largely intact as it orbited around the sun, likely in the asteroid belt. By chance, it was lodged out of its orbit and ended up hurtling into the Earth’s atmosphere and landing in Costa Rica. Quite a journey for a ball of mud, no?