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You are here: Home / Universe / Is the Earth the Only Planet with a Moon?

Is the Earth the Only Planet with a Moon?

August 5, 2020 by Karen Hill

We call our moon “the moon” because it’s the only moon that earth has. But some of the other planets have moons too. And all of the planets that do have moons have more than one!

Mars and Neptune each have two moons, Uranus has five moons, and Saturn has ten. Jupiter, the largest planet, has 14 moons, the last one was discovered as recently as 1975.

Mercury and Venus have no moons. But astronomers think that Pluto, the farthest planet from the sun, might have a single moon. So far, the earth is the only planet known to have just one moon.

One of Jupiter’s moons, called Ganymede, is the largest moon in the solar system. It’s about 3,275 miles across, which makes this moon bigger than Mercury, a planet!

The smallest moon in the solar system, Mars’s Deimos, is only about eight miles across, a distance you could walk in half a day!

Related Facts

  • How Does the Moon Always Keep the Same Face Toward Earth?
  • What Causes the Phases Of the Moon and What Are the Different Phases Of the Moon Called?
  • Why Is the Moon So Much Bigger When It’s Rising and Setting On the Horizon?
  • What is the smallest planet in the solar system?
  • Why Is There a Simultaneous High Tide On Both Sides of the Earth and What Causes the Tide Generating Force?
  • What Causes the Ocean Tides and Why Are There Two High Tides Every Day?

Filed Under: Universe

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist. Born in New York, her work has appeared in the Examiner, Yahoo News, Buzzfeed, among others.

Previous Post: « Is There Such a Thing as a Blue Moon?
Next Post: Are All Planets Made of the Same Thing? »

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