“The lifetime of a human being is measured by decades, the lifetime of the Sun is a hundred million times longer. Compared to a star, we are like mayflies, fleeting ephemeral creatures who live out their lives in the course of a single day.”

—  Carl Sagan , book Cosmos

Source: Cosmos

Last update June 3, 2021. History

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American astrophysicist, cosmologist, author and science ed… 1934–1996

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