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ghost77
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Theoretically, what would be the closest one planet could safely exist away from another?
The distance between planets varies depending on their orbits and positions in the solar system. The average distance between Earth and Mars, for example, is about 140 million miles.
The distance between planets is typically measured in astronomical units (AU) or kilometers. One AU is equal to the average distance between the Earth and the Sun, which is about 93 million miles.
The closest planet to Earth is Venus, with an average distance of about 26 million miles.
The farthest planet from Earth is Neptune, with an average distance of about 2.7 billion miles.
The distance between planets changes because they all have elliptical orbits, meaning they are not perfectly circular. This causes them to sometimes be closer or farther away from each other as they orbit the Sun.