Other Worlds

di Carl Sagan

1975 · 160 pagine · Bantam · ISBN 9780552664394

Trama

At an instant some 15-billion years ago, the cosmic clock began to tick- and the universe, or at least its present incarnation, was born.For some 10- billion years the clock ticked away. And then our sun turned on,the planets formed,life and intelligence evolved.

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