What is a Planet? - NASA Science

The Definition of a Planet What is a planet? According to the Merriam-Webster dictionary, the word planet goes back to the ancient Greek word planēt, and it means “wanderer.” The International Astronomical Union (IAU) – the group of astronomers that names objects in our solar system – planets originally were defined as objects that moved […]

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Could electricity exist in space or just on planets? - Quora

Could electricity exist in space or just on planets? - Quora

NASA Space Place - What exactly does a planet consist of? go.nasa.gov/2gsfVJz

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How can we consider that a space body (Earth) is a planet? - Quora