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There are two planets in our solar system that do not have moons: Mercury and Venus. They are the two planets closest to the sun and they are both terrestrial planets like Earth and Mars. Their proximity to the sun may be part of the answer; the sun's gravity may disrupt the orbits of would-be moons. This could especially be true of Mercury, which is the innermost and least massive of the planets. It is also possible that the planets simply never experienced events that would result in a moon with a stable orbit. Venus has the slowest rotation of all the planets and actually rotates "backwards." This slow retrograde rotation would tend to drag any orbiting moon in through tidal interactions, so it is possible than Venus once had a moon or moons that crashed int the planet long ago.
We do not know how many planets outside the solar system have moons.
Wiki User
∙ 7y ago
Wiki User
∙ 12y agoSome planets just don't have moons. Some do. A moon is created when a chunk of rock starts orbiting a planet and it gets bigger and bigger when more rocks hit it. And a moon is born.
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How do planets get their moons?
moons are small planets caught in the gavity of bigger planets.
Why the dwarf planets have moons?
planets have moons for day and night
Does the terrestrial planets have more moons than the outer planets?
Oh no, it is the outer planets which have the most moons. Terrestrial planets such as Earth have relatively few moons.
Do smaller planets have more moons?
No. Larger planets have more moons.
Are moons satellites to planets?
yes moons are satellites to other planets
What orbits some planets?
moons
How many moons do the suns have?
The Sun has no moons. Moons orbit Planets > Planets orbit the Sun.
What are moons to planets?
Moons are satellites of planets.
Do all planets have the same number of moons?
No, some planets like Mercury and Venus don't have any moons. Earth has one moon, Mars has two moons, and the outer planets have lots of moons. Jupiter has more than 60.
Why do the planets go round the sun and not the moon?
Because the moons are the ones revolvimg around the planets (only some planets have moons, not all). And besides, moons aren't in the center of the solar system. They're even smaller than the planets.
How do planets get their moons?
moons are small planets caught in the gavity of bigger planets.
Can dwarf planets have moons?
Yes, and they do. Not all of them have confirmed moons but some do. Pluto, for example, has four known moons.
Why the dwarf planets have moons?
planets have moons for day and night
Do planets and moons have stars?
On the contrary! A star has planets, which circulate it. And planets have moons. Stars do not circle planets.
Does the terrestrial planets have more moons than the outer planets?
Oh no, it is the outer planets which have the most moons. Terrestrial planets such as Earth have relatively few moons.
Do Planets and their moons emit light?
No. Planets and moons reflect light.
Do smaller planets have more moons?
No. Larger planets have more moons.
