How Many Moons Does Each Planet Have

Since ancient times, people have looked up at the night sky and wondered about the planets. Today, we know a lot more about them than our predecessors ever could have imagined. For example, we now know that each planet has a certain number of moons.

In this blog post, we will explore how many moons each planet has. We will also discuss some of the most interesting facts about each planet’s moons. So, without further ado, let’s get started!


Mercury is the smallest planet and the closest to the sun. Mercury is a small planet that, though it has no moons, looks like a moon because of the repeated impacts from meteors and asteroids which have pockmarked its surface.


Mercury and Venus do not have moons because they would be in an unstable orbit that is prone to be pulled by the Sun’s gravity.


You probably already know that Earth has one moon. This moon, aptly named the Moon, is the fifth largest moon in the solar system. Our planet’s wobble is stabilized by the moon’s presence, which also serves to regulate our climate.


Mars’ two moons are among the smallest in the solar system. They are called Phobos and Deimos. Phobos is the larger of the two, and similar to Earth’s moon, they always show the same side to their planet. Both cratered moons are coated in dust and rocks, with bumps throughout their surface.


Jupiter has a whopping number of 80 moons. The International Astronomical Union (IAU) has named 57 moons, with 23 more pending official names. Italian astronomer Galileo Galilei discovered Jupiter’s four largest moons, now known as the Galilean satellites, in 1610.


Saturn has an amazing 83 moons. There are 63 confirmed moons and 20 more awaiting official confirmation and naming by the IAU. Saturn’s moons come in all shapes and sizes, from the gigantic Titan to ones that are small enough to fit inside a sports arena. These moons not only reflect Saturn’s rings and magnetosphere, but they also contribute to their formation.


Unlike any other planet’s moons in our solar system, Uranus’ 27 moons are all named after either characters or playwrights from Shakespearean works. A couple of the moons are also named for figures found in Alexander Pope’s literary canon. Uranus’ largest moon, Titania, was discovered in 1787 by William Herschel.


Neptune has 14 moons, which are very diverse in size and composition. Triton is the largest of Neptune’s moons and is unusual because it orbits in the reverse direction of Neptune’s rotation. Triton’s strange, thin atmosphere was first discovered by Voyager. From Earth, we’ve been able to detect it several times since then – and interestingly enough, it seems to be growing warmer. Scientists aren’t sure why this is happening yet.

Final Thoughts

So, there you have it! A brief overview of how many moons each planet has. They all differ quite a bit, with Mercury and Venus having zero moons, while Saturn has an impressive 83. We hope you enjoyed learning a bit about these planets’ moons. Until next time!