"Throughout our solar system, chunks of ice, gas, and dust fly around in the form of comets. This ... text introduces readers to the wonders of comets: their size and shape, their formation, and how they orbit the sun"--
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"Throughout our solar system, chunks of ice, gas, and dust fly around in the form of comets. This ... text introduces readers to the wonders of comets: their size and shape, their formation, and how they orbit the sun"--
Read Less