Chapter 10
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Chapter 10 |
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Vocabulary
universe - The vast expanse of space which contains all of the matter and energy in existence.
page 67 - "The universe is filled with wonders. Isn't it, Jack?"
galaxy - A cluster of stars, dust, and gas held together by gravity that constitute the universe. Astronomers have estimated that the universe could contain 40 to 50 billion galaxies.
page 69 - "No. I think he's an alien," said Annie, "from another galaxy."
solar system - is made up of the Sun at its center, the nine planets that orbit it, and the various satellites, asteroids, comets, and meteorites that are also controlled by the Sun's gravitational pull.
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| solar system |
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galaxy |
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universe |