Twenty-First Century Books

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From earliest times, humans have wondered about the sky above them. People looked at distant stars and wondered what they were made of. They wondered whether any other places in the universe were like Earth. At first people used simple telescopes to study the solar system'the Su…

Each night, millions of stars light up the dark skies. Galaxies throughout the universe encompass thousands of stars. The appearance of stars in the sky have intrigued and enthralled humans since ancient time. From constellations to the big bang theory, Stars and Galaxies explor…