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From Citizendium, the Citizens' Compendium

Contents 1 Parent topics 2 Subtopics 2.1 Dwarf planets 3 Other related topics 3.1 Planets

Parent topics

• solar system [r]: The sun and the planets orbiting it. [e]
• asteroid belt [r]: Add brief definition or description
• transneptunian objects [r]: Add brief definition or description

Subtopics

Dwarf planets

• Pluto [r]: A dwarf planet above Neptune that, for many years, have been considered a planet. Named after the Roman god of the underworld. [e]
• Ceres [r]: The more massive body of the asteroid belt. Originally classified as a planet, later was considered an asteroid. [e]
• Eris [r]: A dwarf planet above Neptune, discovered in 2003. Named after the Greek personification of strife and discord. [e]

Other related topics

Planets

• Mercury [r]: The first planet from the Sun in our solar system; named after the Roman messenger of gods. [e]
• Venus [r]: The second planet from the Sun in our solar system; named after the Roman goddess of love. [e]
• Earth [r]: The third planet from the Sun in our solar system; the only place in the universe known by humanity to harbor life. [e]
• Mars [r]: The fourth planet from the Sun in our solar system; named after the Roman god of war; also known as the "Red Planet". [e]
• Jupiter [r]: The fifth planet from the Sun in our solar system; named after the Roman god of the same name; largest planet in our solar system. [e]
• Saturn [r]: The sixth planet from the Sun in our solar system; named after the Roman god of agriculture and harvest. [e]
• Uranus [r]: The seventh planet from the Sun in our solar system; name after the Greek god of the sky. [e]
• Neptune [r]: The eighth planet from the Sun in our solar system; named after the Roman god of the sea. [e]