This page covers 3 moons whose names start with the letter G, ranging from “Ganymede” to “Greip.” These natural satellites orbit planets across our solar system, varying wildly in size, origin, and history. Some are ancient discoveries, while others were found just decades ago using modern telescopes.

Moons are natural bodies that orbit planets, held in place by gravity. They range from tiny captured asteroids just a few kilometers wide to worlds larger than some planets — Ganymede, for example, is bigger than Mercury and is the largest moon in our solar system.

Below you’ll find the table with Moon, Parent Planet, Diameter (km), Discovery Year, and Description.

Moon: The name of each moon. Names often come from mythology, literature, or the traditions of the culture associated with its discovery.

Parent Planet: The planet each moon orbits. This helps you understand where in the solar system the moon is located and which spacecraft or telescopes were used to find it.

Diameter (km): The moon’s approximate size in kilometers. This gives you a quick sense of scale, from tiny irregular rocks to worlds thousands of kilometers wide.

Discovery Year: The year the moon was first identified. Earlier discoveries were made with basic telescopes, while more recent ones required advanced imaging technology and global survey programs.

Description: A brief summary of the moon’s key features, orbit, or history. This gives you useful context that numbers alone can’t capture.

Moons

Descriptions