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6 films
One billion years ago, the Earth was a toxic environment where certain life forms could not survive, marked by black oceans and barren land.
Eight astronauts with over 1,000 days in space discuss the likelihood of finding simple life forms on other planets.
Charles Darwin published his ideas on evolution in 1859, claiming that life began with a few simple organisms that evolved into millions of species.
650 million years ago, Earth was locked in ice for 25 million years, nearly wiping out all life and setting the stage for complex organisms to evolve.
More than 100 years ago, H.G. Wells popularized the idea of extraterrestrial life with works like The War of the Worlds and A Trip to the Moon.
650 million years ago, Earth experienced a deep freeze that encased the planet in ice, pushing life to the brink of extinction.
