S Small Bodies In the Solar System

We turn now from the Solar System in general to look in more detail at the smallest bodies that orbit the Sun - asteroids and bodies that appear as comets in the inner Solar System. These are interesting in their own right, but they are also of importance in our attempts to understand the larger bodies, so it makes sense to consider the small bodies first. We shall start with the asteroids, then go on to comets, and conclude with meteorites - small interplanetary bodies that have reached the Earth's surface, where they can be collected and studied in much greater detail than we can study any body in space.

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