Mars
Mars is the fourth planet from the sun and our closest neighbor. It is often referred to as the red planet because of its red soil found on the planet. It is being used most for space travel by the U.S.A. It is very much like Earth, with days just over 24 hours long. It also has a resemblance to our seasons. In 1877, Giovanni Schiparelli observed what he thought were called "canals" on the surface of Mars. That made scientists look harder for life on Mars. Through all the research, no one could prove life on Mars existed.
The temperatures on Mars were low by Earth standards, may rise in summer to a "whopping" -24 degrees Fahrenheit. They could even fall to -199 degrees Fahrenheit. Those temperatures are a little bit like ours, having to do with the closeness to us. The polar icecaps on Mars are made up of frozen carbon dioxide and frozen ice, much like our poles. It can be seen from Earth, and we can even distinguish a few different markings. Mars still bewilders humans and still will for years to come.