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The Winter 2010 issue of The Earth Scientist includes a variety of educational resources, ranging from astronomy to glaciers. Check out the other publications and classroom materials in our online store.

Solar System Coloring Book--Comets

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Location: At the outer edge of the solar system, in the Oort cloud

Number: Millions of them

Famous Comet: Halley's comet returns to Earth every 76 years.

Comets are huge dirty snowballs that are found in the farthest parts of the solar system. Comets are made of ice, dust, and small chunks of rock. Some comets come into the inner solar system every few hundred years and travel around the Sun. As they get close to the Sun, they give off gas that forms into a long tail that can reach across the sky when seen from Earth.

Other Coloring Books:

Sun | Mercury | Venus | Earth | Mars | Asteroids | Jupiter | Saturn | Uranus | Neptune | Pluto | Comets

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF