"National boundaries are not evident when we view the Earth from space. Fanatical ethnic or religious or national chauvinisms are a little difficult to maintain when we see our planet as a fragile blue crescent fading to become an inconspicuous point of light against the bastion and citadel of the stars."

Alien Earth Science Space

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About Carl Sagan

Carl Sagan was an American astronomer and science communicator known for Cosmos and his work in planetary science.

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