All About Mercury | NASA Space Place – NASA Science for Kids
https://spaceplace.nasa.gov/all-about-mercury/en/
WEBApr 11, 2024 · Mercury is the smallest planet in our solar system. It’s just a little bigger than Earth’s Moon. Mercury itself, though, doesn’t have any moons. It is the closest planet to the Sun, but it’s actually not the hottest. Venus is hotter. Along with Venus, Earth, and Mars, Mercury is one of the rocky planets.
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