Loosely bound aggregates of rock and ice are

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Loosely bound aggregates of rock and ice typically refer to comets. Comets are made up of a mixture of dust, ice, and rocky material that are loosely held together by gravity. As they approach the sun, the ice and other volatile elements evaporate, creating a coma or a tail that can be visible from Earth. Asteroids are made up of rock and metal and are typically solid and densely packed. Meteors and meteorites are not aggregates of rock and ice, but rather refer to objects that enter Earth's atmosphere (meteors) or reach the surface of the Earth (meteorites).

Loosely Bound Aggregates of Rock and Ice Are