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Planet Sizes and Order

The planets in our solar system can be ordered by size from smallest to largest as follows:

  • Mercury
  • Mars
  • Venus
  • Earth
  • Neptune
  • Uranus
  • Saturn
  • Jupiter

Jupiter is the largest planet in our solar system, with a radius of 43,441 miles (69,911 kilometers). Mercury is the smallest planet, with a radius of 1,516 miles (2,440 kilometers).

The planets can also be ordered by their distance from the sun, from closest to farthest, as follows:

  • Mercury
  • Venus
  • Earth
  • Mars
  • Jupiter
  • Saturn
  • Uranus
  • Neptune

Mercury is the closest planet to the sun, at an average distance of 36 million miles (58 million kilometers). Neptune is the farthest planet from the sun, at an average distance of 2.7 billion miles (4.4 billion kilometers).

Here is a table that summarizes the sizes and distances of the planets in our solar system:

Planet Radius (miles) Distance from Sun (miles)
Mercury 1,516 36 million
Venus 3,760 67 million
Earth 3,959 93 million
Mars 2,106 142 million
Jupiter 43,441 483 million
Saturn 36,184 886 million
Uranus 15,759 1.78 billion
Neptune 15,299 2.79 billion

 

Mercury

Mercury is the smallest and closest planet to the sun. It has no moons and a very thin atmosphere. Mercury's surface is covered in craters, which were formed by impacts from asteroids and comets. Mercury has a day that is only 59 Earth days long, but its year is 88 Earth days long.

Venus

Venus is the second planet from the sun. It is the hottest planet in our solar system, with an average surface temperature of 867°F (462°C). Venus has no moons and a very thick atmosphere made up mostly of carbon dioxide. Venus's surface is covered in volcanoes and mountains. Venus rotates backwards compared to the other planets in our solar system.

Earth

Earth is the third planet from the sun. It is the only planet in our solar system known to support life. Earth has one moon and a relatively thin atmosphere made up mostly of nitrogen and oxygen. Earth's surface is covered in oceans, continents, and mountains.

Mars

Mars is the fourth planet from the sun. It is the second smallest planet in our solar system. Mars has two moons and a very thin atmosphere made up mostly of carbon dioxide. Mars's surface is covered in craters, volcanoes, and canyons. Mars has a day that is 24 hours and 37 minutes long, and its year is 687 Earth days long.

Jupiter

Jupiter is the fifth planet from the sun. It is the largest planet in our solar system. Jupiter has 79 moons and a very thick atmosphere made up mostly of hydrogen and helium. Jupiter's surface is covered in clouds and storms. Jupiter has a day that is only 10 hours long, and its year is 11.86 Earth years long.

Saturn

Saturn is the sixth planet from the sun. It is the second largest planet in our solar system. Saturn has 62 moons and a very thick atmosphere made up mostly of hydrogen and helium. Saturn's surface is covered in clouds and storms. Saturn has a day that is only 10 hours and 39 minutes long, and its year is 29.46 Earth years long.

Uranus

Uranus is the seventh planet from the sun. It is the third largest planet in our solar system. Uranus has 27 moons and a very thick atmosphere made up mostly of hydrogen and helium. Uranus's surface is covered in clouds and storms. Uranus has a day that is only 17 hours and 14 minutes long, and its year is 84.01 Earth years long.

Neptune

Neptune is the eighth planet from the sun. It is the fourth largest planet in our solar system. Neptune has 14 moons and a very thick atmosphere made up mostly of hydrogen and helium. Neptune's surface is covered in clouds and storms. Neptune has a day that is only 16 hours and 6 minutes long, and its year is 164.8 Earth years long.

 



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