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Comets Study Guide

Across
Most long-period comets come from this region
In 1951, this dutch astronomer theorized the Oort Cloud beyond Pluto
Easier comets to predict and take about 200 years to orbit the sun
A ball of frozen gas, dust, and rock that orbits our sun
Part of a comet that is made of dust and gas and stretches for millions of miles
Down
The center of a comet that carries frozen parts and gases with dust
Harder to predict and take about 30 million years to orbit the sun
Most comets are found in this place
The atmosphere of a comet that heats up when it gets closer to the sun