Could a giant planet between Mars and Jupiter have doomed Earth? A new study suggests that small changes would have been ...

There are 8 planets in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Naptune. The solar system formed about 4.6 billion years ago from a cloud of interstellar gas and dust.

Full of extraordinary footage, Robert Stone's blissed-out mind-bender of a movie meditates on the possibilities of life in ...