IT’S the question at the heart of humanity itself, the key to everything we know of ourselves, of our world and even of our gods: Are we alone in the universe?
And now the answer is closer than ever: There are up to 200 billion habitable planets in our galaxy and we may not even be alone in our solar system.
In a few hours NASA is expected to announce that it has found a possible indicator of life on one of Saturn’s 62 moons.
