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The Moon and Other Natural Satellites

What is a Moon?

A moon is a natural satellite that orbits a planet. Some planets have dozens of moons, while others have none. Earth has just one Moon, but Jupiter has over 90 moons!

Earth’s Moon: The Only Moon Humans Have Visited

Earth’s Moon is the fifth-largest moon in the Solar System. It affects tides, stabilizes Earth’s rotation, and has been explored by astronauts during the Apollo missions.

Largest Moons in the Solar System

  • Ganymede (Jupiter) – The largest moon, even bigger than Mercury.
  • Titan (Saturn) – Has rivers and lakes of liquid methane.
  • Europa (Jupiter) – Believed to have a subsurface ocean that may support life.
  • Io (Jupiter) – The most volcanic world in the Solar System.

Scientists believe moons like Europa and Enceladus may harbor alien life beneath their icy surfaces!

💡 Want to explore more? Read The Asteroid Belt – A Region of Space Rocks