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Section 13.14: A Closer Look at the Planets • Images and information we have about the planets comes from space probes that have visited all planets in our solar system, except Pluto which is now considered a dwarf planet. • Images are computer enhanced because they are taken at wavelengths not visible to the human eye. • Planets are grouped into 2 categories: Inner Planets (Terrestrial Planets) Outer Planets (Gas Giants) ¾ 4 planets closest to the sun ¾ 4 planets in the outer limits of ¾ Mercury, Venus, Earth, Mars our solar system ¾ Jupiter, Saturn, Uranus, ¾ Called Terrestrial because Neptune they resemble Earth (Terra) ¾ Composed mainly of rocky ¾ Atmosphere consists mainly material and metals of gases hydrogen and helium ¾ These planets appear to lack a solid surface, but the cores may contain metals TO DO: Use the information provided in your text to complete the Planetary Summary handout.