Hobbies And Interests
Mars
Mars is the fourth planet from the sun and has been a focal point of human scientific interest for many years. Scientists believe that water once existed on Mars to the point that Mars experienced some of the most significant flooding in the history of the solar system approximately 3.5 billion years ago, according to the National Geographic website. But the surface of Mars has grown too cold and all water has been turned to ice. Mars is home to the tallest known volcano in the solar system at 15 miles tall and the largest known canyon in the solar system that stretches almost 3,000 miles in diameter.
Pluto
Pluto is a dwarf planet located 5,913,520,000 kilometers from the sun. Pluto is smaller than the Earth's moon, and has one moon of its own, which is called Charon. It is referred to as a dwarf planet because astronomers changed the definition of a planet in 2006 and Pluto no longer fit the description. Pluto is considered to be too physically small to be a planet, and it is unable to maintain a steady orbit because its path is altered by asteroids and other debris in its path.
Color
One way in which Pluto and Mars are similar is in color. Mars has a brownish color that is brought about because the surface of Mars contains a great deal of iron. The iron comes into contact with the moisture and cold on the surface and then turns a reddish brown rust color. Pluto is also a brownish color. The misconception that Pluto is gray comes from the lack of sunlight that is present in most images of Pluto.
Atmosphere
While neither Pluto nor Mars have an atmosphere that can sustain human life, the atmosphere on both Pluto and Mars is made up primarily of carbon dioxide. Pluto's atmosphere might also have traces of nitrogen, methane and ethane as well.