I'm from a different planet.

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Jupiter is the largest planet in the Solar System.

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Saturn is the second largest planet in the Solar System.

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Astronomy deals with the stars and planets.

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Mars is "the Red Planet".

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Since the orbits are elliptical, the planets do not always have the same distance from the Sun.

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Earth, Mars, and Jupiter are planets.

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Astronomy involves the study of stars and planets.

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Mercury is a planet.

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Neptune is the eighth planet of the solar system.

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When I was your age, Pluto was a planet.

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Tom doesn't know the difference between a star and a planet.

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How many planets are there in the solar system?

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Saturn is a planet.

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Mars is a planet.

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What planet are you from?

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The earth is not a star, but a planet.

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The planets revolve around the sun.

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Planets move around a fixed star.

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When I was your age, Pluto was a planet.

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The Moon isn't a planet, but a satellite of the Earth.

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Earth is a planet.

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Mercury is the smallest planet in our solar system.

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That planet is called Saturn.

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