Celeste was a pleasure planet located near Jupiter. There was a humanoid species that lived there that used to smuggle treasures from other planets.
Rise of the Bodyburster
When the inhabitants of Celeste smuggled an Ovomorph from a Xenomorph planet, a Facehugger jumped from the Egg and latched onto a host. The Chestburster that emerged from its host was mutated and caused chaos on the planet. The Chestburster, dubbed the "Bodyburster", was highly poisonous and its bites caused its victims to explode.