What are Asteroids and Comets Made Of?

Comet and asteroid: Jiangsu Science and Technology Press,

Comet and asteroid

Have you seen bright comets and shooting stars across the sky?

Do you know how many asteroids there are in space? How did dinosaurs die 65 million years ago? These interesting questions will be answered in this book.

Author :( US)

The Asimov Junior Universe Series was written by the world-famous popular science master Asimov. It is a set of outstanding young astronomy science books. The writing is humorous, easy to understand, and the pictures are exquisite and realistic. The full set of books comprehensively demonstrates the major achievements and rapid development of modern astronomy and aerospace technology. It provides a vast amount of cosmic materials for the majority of young readers, and is the best reading for improving scientific quality.