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they differ because of their distances around the sun
it forms a solar system...
All the planets in the solar system move at different speeds around the sun, and at different distances. The term "year" as in one orbit around the sun has nothing to do with a "year" as a unit of measurement on Earth.
Hydrogen and helium.
What is a solar System Watch? Solar System Watch is a great way to quickly learn about our solar system and be fun. From the Moon to Mars, you can learn about each planet, its moons, and other celestial bodies in our Solar System.
grgravitational interraction between each planet and the sun
because each planet is millions of miles apart
Yes, Billions of people do each day. The Earth is a planet :-)
In the solar system, the planets that are on each side of the earth are Venus and Mars.
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yes there is just the core in each planet in our solar system is different hope that helps u cya
sorta there are inner and outer planets the inner planets are alike and outer planets are alike to but inner and outer planets are different.