Explains the differences between asteroids and comets. Presents a chart showing a size comparison between some known asteroids and comets.

Asteroid Impact is an 8-10 class long (350-450 min) earth science curricular unit where student teams are posed with the scenario that an asteroid will impact earth. They must design the location and size of underground caverns to save...

This site from the National Aeronautics and Space Administration provides an interesting activity on making asteroids. "Create your own odd-shaped asteroids out of plain old mashed potatoes. Bake them in the oven to turn them asteroid...

This site explores what is currently known about the asteroid 253 Mathilde. Content includes an orbiting path, and composition. Links are provided throughout for additional information.

Learn about asteroids. What are they? What is their structure? Difference between asteroids and comets? The brief, to the point text makes this site most suitable for the younger researcher.

Kids learn about asteroids in the science of astronomy. Large chunks of rock and metal that orbit the Sun including the asteroid belt, Ceres, and Vesta.

Learn the difference between asteroids and comets, meteoroids and meteorites, and more!

This site contains facts about the asteroid 253 Mathilde from the National Space Science Data Center at NASA.

This comprehensive site delves into other aspects of our solar system besides the planets and the sun. Click on the topics on the right like solar winds, the heliosphere, the heliopause, asteroids, comets, and more.

This site has links to all the planets, providing an overview of the solar system. It also contains information about asteroids, meteors, comets and other features of our solar system.

Discover fascinating facts about meteorites, pieces of asteroids that originate in outer space and survives their passage through the atmosphere to reach the ground.

"One of the great mysteries in science is the extinction of the dinosaurs at the end of the Mesozoic Era some 65 million years ago. Who (or more likely what) caused it is unknown and a subject of great debate." Many theories are touched...

Kids learn about the glossary and terms for the science of astronomy including words and definitions such as asteroid, comet, meteoroid, galaxy, eclipse, etc.

Take a journey through the solar system with this interactive guide. Includes planetary history, "travel information," "tourist highlights," and video clips. Games and quizzes include a Solar System jigsaw that prompts the student to...

This survey of the planets includes all the basics, size, mass, atmosphere, length of day, and the like. It features interactive activities and learning exercises and compares all of the planets in colorful tables.

This is a biography of Carolyn Shoemaker. This account tells of her growing up with no interest in science, then discovering more comets and asteroids than any other living astronomer. Links to additional material and photographs are...

Explore space beyond Pluto in the Kuiper Belt region of our solar system. Find out about the space bodies that exist there and what our space missions have taught us about this far away region.

Great information about all echinoderms: sea stars, sea urchins & sand dollars, sea cucumber. How they move, what they eat. Nice images.

This site from the National Aeronautics and Space Administration provides a fun project on rockets. "Nothing in space stands still. Everything either orbits around something else, or moves toward or away from something else. So how do...

Brief article examines what meteorites are, the different types, and where they came from.

Anywhere there is matter there is chemistry, therefore chemistry is found all over the universe, not only here on Earth. In fact, scientists have even discovered organic chemistry in other galaxies.