Comets (Let'S-Read-And-Find-Out Science Book) - Hardcover

Branley, Franklyn Mansfield

 
9780690044140: Comets (Let'S-Read-And-Find-Out Science Book)

Synopsis

Explains what comets are, how they are formed, and how their unusual orbits bring them into earth's view at predictable intervals, with a special focus on Halley's comet.

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