What is the smallest planet? Taking a closer look at planet sizes.

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As elementary schoolers, we learned the order of the planets. Maybe your teacher even had a snappy mnemonic like “My Very Educated Mother Just Served Us Nine Pizzas” or “My Very Educated Mother Just Served Us Nachos” after Pluto was axed from the planetary lineup.

The International Astronomical Union even formally recognizes the latter mnemonic device, while also pointing out the five dwarf planets that exist among the eight major ones. 

The order of the planets is an easy one to remember, but what about the size of the planets? Here is a breakdown of the size of the planets in our solar system. 

You could name a planet:How to name one the James Webb Telescope observed.

Which planet has the most moons?Moons of Saturn, Venus and Jupiter explained.

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