The Four Inner Planets

Have you ever wonder why the planets are in the order they are in? What makes an inner planet? Are the inner planets the only ones found with life? The four inner planets are called terrestrial planets and they are the four closest to the sun.

There are four inner planets: mercury, venus, earth, and mars. They are the closest to the sun. inner planets exist around stars and each one of them has a central care mostly made of iron. They are called inner planets because they are closer to the sun. We find life on earth (inner planet) because of its atmosphere (oxygen), the climate we have has a moderate amount of carbon dioxide.

Inner planets are mostly made out of silicate rocks and metals, they all contain iron cores. Compared to the