Formation and evolution of the Solar System depletion period that brought the asteroid belt down close to its present mass is thought to have followed when Jupiter and Saturn entered a temporary 2:1 orbital resonance (see below). The inner Solar System's period of giant impacts probably played a role in the Earth acquiring its current water content (~6 kg) from the early asteroid belt. Water is too volatile to have been present at Earth's formation and must have been subsequently delivered from outer, colder parts of the Solar System. The water was probably delivered by planetary embryos and small planetesimals thrown out of the asteroid belt by
Leather Goddesses of Phobos 2: Gas Pump Girls Meet the Pulsating Inconvenience from Planet X! had no such settings. The box did, however, feature "warnings" such as "Mature Attitudes Expressed". In the original "Leather Goddesses of Phobos", the titular female aliens suffered a humiliating defeat in 1936 at the hands of an Earthling from Ohio. Now it is 1958, and astronomers have recently discovered "Planet X", the tenth planet in our solar system. The desert town of Atom City, Nevada does not contain much besides a military base, nuclear power plant and gas station. But one night the sleepy town witnesses a spaceship that crash-lands with a single survivor: Barth, the "Pulsating Inconvenience" from the