Mars is too far from the Sun and its ecology is dying. The Martian invaders want to swap Earth's and Mars' orbits, so Mars will be closer to the Sun and Earth can have Mars's old orbit, with a hydrogen bomb being used to blow Earth out from the Sun.
Mars is too far from the Sun and its ecology is dying. The Martian invaders want to swap Earth's and Mars' orbits, so Mars will be closer to the Sun and Earth can have Mars's old orbit, with a hydrogen bomb being used to blow Earth out from the Sun.
