Carl Sagan. Astronomer. Astrophysicist. Cosmologist. Writer. Great guy. Personal hero. He was born November 9, 1934. Happy Birthday, Dr. Sagan—we miss you. We need more people like you in the planet. Learn more about him here.
Carl Sagan. Astronomer. Astrophysicist. Cosmologist. Writer. Great guy. Personal hero. He was born November 9, 1934. Happy Birthday, Dr. Sagan—we miss you. We need more people like you in the planet. Learn more about him here.
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