The belief that intelligent life might exist elsewhere in the universe was not subjected to a truly scientific enquiry until recently. Yet it undoubtedly antedates recorded history ... To consider the Earth as the only populated world in infinite space is as absurd as to assert that in an entire field of millet, only one grain will grow. -- Metrodorus of Chios In space … [Read more...]
Earth Facts
The Milky Way is the galaxy that contains the Solar System. It is a barred spiral galaxy 100,000-120,000 light years in diameter containing 200–600 billion stars. The galaxy is estimated to contain 50 billion planets, 500 million of which could be located in the habitable zone of their parent star. The rotational rate: 1 per 15 to 50 million years. The galaxy is also moving at … [Read more...]