Iâve come up with fewer reasons for giving a child a cell phone earlier, but at least two of them are enough to offset a multitude of others. Keeping tabs on them. As each year passes in a childâs life they venture farther from home and for longer periods of time.
Like the inner planets, the outer planets have similar characteristics to one another. The outer planets are so much larger than the inner planets that they make up 99 percent of the mass of the celestial bodies that orbit the Sun. Although mainly composed of gas, the outer planets also have other ingredients.
The inner planets differ greatly from the outer planets in our solar system. Unlike the outer planets, which are composed entirely of gasses, the inner planets are composed of solid elements and/or compounds. The inner planets are much smaller in size and mass compared to the outer planets. As can be seen from this image: