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the combined diameter of the inner planets is 22,690 miles, or 26% the diameter of Jupiter.
Earth has the largest diameter of the four inner planets (12,756km at the equator).
outer planets are gas giants whille inner planets are just rocky planets. that includes that outer planets have significant amount of mass than the inner planets
INNER PLANETS - SmallEarth is the largest of the Inner Planets, with a diameter of 12,756 km (7,926 miles). Mercury is the smallest with a diameter of 4,878 km (3,031 miles)OUTER PLANETS - Huge!Jupiter, the largest planet, has a diameter of 142,984 km (88,846 miles). Neptune is the smallest of the Outer Planets with a diameter of 49,532 km (30,779 miles)
An inner planet is mostly made of iron and has more mass than outer planets, outer planets are mostly made of gasses, makeing them have less mass. The inner planets are the planets between the asteroid belt and the sun
Earth
With a diameter of 12756 km, Earth is the largest of the four inner planets. Venus is the next largest inner planet after the Earth with a diameter of 12104 km.
Venus and Earth are pretty close.
Jupiter has great mass, but it's not an inner planet. Earth has most mass of the inner planets, but far less than Jupiter.
Venus has almost the same mass and diameter as the earth.
But you CAN determine the size of the planets: in diameter, overall mass, and in density.
There are a lot of differences between the inner and outer planets. First of all, they inner planets are also known as the "Rocky planets". THey are rocky, hence their name "Rocky planets". And the outer planets are also known as "Gas Giants." THey are mainly composed of gas, hence their name, "Gas Giants." Another difference is their mass. The outer planets have greater mass than the inner planets. In other words, they are heavier.The inner planets follow orbital paths which, like those of the outer planets,are centered on the sun. But the inner planets, without exception, are nearerto the sun than any of the outer planets are.