Mercury & Venus are the only 2 planets in our solar system that have no moons. - FactzPedia

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Mercury & Venus are the only 2 planets in our solar system that have no moons.

Mercury & Venus are the only 2 planets in our solar system that have no moons.


The answer is no moons at all. That's right, Venus (and the planet Mercury) are the only two planets that don't have a single natural moon orbiting them. Figuring out why is one question keeping astronomers busy as they study the Solar System.

Most likely because they are too close to the Sun. Any moon with too great a distance from these planets would be in an unstable orbit and be captured by the Sun. If they were too close to these planets they would be destroyed by tidal gravitational forces.

Most of the major planets – all except Mercury and Venus – have moons. Pluto and some other dwarf planets, as well as many asteroids, also have small moons.

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