Jupiter is the heaviest planet in the solar system, with a mass of 1.90 x 10^27 kg. The gas giant's mass is equivalent to about 318 Earths. Jupiter is so heavy that it's twice as heavy as all the planets in the solar sys... More »

Jupiter is the heaviest planet in this solar system. The planet is primarily made up of very light gases, but it contains the most mass. More »

Aristotle's picture of the heavens described a series of 55 concentric spheres composed of an incorruptible element called "aether." These spheres contained the sun, moon, planets, stars and other heavenly bodies that ci... More »

Jupiter is the heaviest planet in this solar system. The planet is primarily made up of very light gases, but it contains the most mass. More »

Mercury is the smallest planet in our solar system; Jupiter is the largest.Pluto was once considered to be the smallest planet, but since Pluto is no longer thought to be a planet, Mercury now takes the title. More »

Jupiter is the largest planet in the solar system, with a radius of 43,441 miles. That is more than 10 times Earth's 3,359-mile radius, but it is also about 16 times smaller than the Sun's radius. Mercury is the smallest... More »

Jupiter is the largest planet in the solar system. It is approximately 1,120 percent larger than planet Earth and has an estimated radius of 43,441 miles. More »

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