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Life at the Edge
Life survives on Earth in places you'd never guess. Extreme environments show how life could adapt to other worlds.
Worlds Beyond Earth
What's out there? Follow these links to explore the solar system and beyond.
The Search
Looking for real aliens in the Search for Extraterrestrial Intelligence.
Nobody Here but Us Earthlings
Most scientists believe life could exist elsewhere in the universe; very few believe it has visited Earth. Find out why.

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