Mars to Stay to 30, thereby beginning a Martian settlement. Since the Martian surface offers all the natural resources and elements necessary to sustain a robust, mature, industrialized human settlement—unlike, for example the Moon—a permanent Martian settlement is thought to be the most effective way to ensure that humanity becomes a space-faring, multi-planet species. Through the use of digital fabricators and in vitro fertilisation it is assumed a permanent human settlement on Mars can grow organically from an original thirty to forty pioneers. A Mars to Stay mission following Aldrin's proposal would enlist astronauts in the following timeline: As Aldrin has said, "who
A Beautiful Planet as "The Great Dying"). Like the force fields which protect fictional spaceships from damage, Spaceship Earth has a very real magnetic field which prevents cosmic rays and the stream of charged particles emitted by the Sun from harming living beings on Earth. In the narrative words of "A Beautiful Planet", the glowing, curtain-like auroras that the astronauts admire in the film "show that shield in action. Because we have this magical magnetic field protecting us, we have our forests, and oceans, animals, and people. It's why ours is a planet of life." Our neighboring planet Mars, on the other hand,