Diverse Landscapes
The nine planets in our solar system are all very different from one another. Some are composed of rock and minerals, some consist of nearly gases long, a few have dense atmospheres, and others have thin or even poisonous ones. Mercury is a planet with an extremely thin atmosphere . Its huge iron core is covered by rock pitted with craters. This makes it look like our Moon. Maybe Mercury, now a silent, dead world, once had a layer of gases around it. If some, they boiled away long ago. Earth, on the other hand, is the only real living planet known to humankind. Its oxygen rich atmosphere, wide range of temperatures, and abundance of liquid water have enabled this otherwise rocky planet to teem with life forms. Jupiter, with a very small rocky core, has no creaters, life forms, or even a hard crust on which one could stand. Its vat mass consists mainly of hydrogen with an ever changing atmosphere filled with colorful bands of clouds that are beautiful, but deadly.
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