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There are four rocky planets, known as terrestrial planets. They are Mercury, Venus, Earth and Mars. Only Mars has more than one moon; the planet has two moons.
Many of the planets have more than one element. Two of these planets that have more than one element are Earth and Jupiter.
yes, because some dwarf planets are only as big as comets, whereas planets themselves take up much more space.
I do not understand the question - the inner planets have no rings, and only Earth and Mars have moons.
No. The only planets without a moon are Mercury and Venus all the other planets have anywhere from one moon to more than sixty.
Nobody knows for sure, really, but according to the number of planets found so far, it seems that there are probably more planets than stars.
There are more than 350 known planets in the milky way, with only 8 in our solar system.
there is only one sun in the solar system A Sun is just a star with more than 5 or six planets
There are four terrestrial, or rocky, planets: Mercury, Venus, Earth and Mars. Of these planets, only Mars has two moons.
we've only found more than 300-256 . but we cannot determine the number of all the exo-planets in the universe.
Most of the known extrasolar planets are more massive than Earth because massive planets are easier to detect. We have detected planets smaller than Earth.
Actually, Saturn is the least dense of all planets, the only planet less dense than water, at 687.00 kg/m³.