Q:

What are the sizes of the nine planets?

A:

Quick Answer

The nine planets in the solar system range in size from approximately 3,000 to 140,000 kilometers in diameter. Ranked from smallest to largest the planets are Pluto, Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn and Jupiter.

Continue Reading
What are the sizes of the nine planets?
Credit: Jason Reed Photodisc Getty Images

Full Answer

The farthest planet from the sun is also the smallest. Pluto's diameter is approximately 3,000 kilometers. Little is known about this planet as it is the only one a space probe hasn't visited. Mercury is about 5,000 kilometers in diameter. It is the closest planet to the sun and is very hot because of the sun's close proximity. Mars is called the red planet because of the abundance of rusty iron on its surface. It is the third smallest planet with a diameter of approximately 7,000 kilometers. Venus is the closest planet to Earth in size with a diameter of 12,000 kilometers. Venus is unusual because it rotates in the opposite direction to the other planets. Earth has a diameter of 12,800 kilometers. It is the third planet from the sun and takes 365 days to complete an orbit. Neptune is one of the four gas giants in the solar system. This gaseous ball has a diameter of 50,000 kilometers. Another gas giant, Uranus is 52,000 kilometers wide. Its atmosphere is mostly hydrogen. Saturn is the second largest planet with a diameter of 120,000 kilometers. Second only to Jupiter in size, Saturn is known for its rings. Jupiter is the largest planet with a diameter of 140,000 kilometers. It is larger than 1,000 Earths combined.

Learn more about Planets

Related Questions

  • Q:

    How many light years away is Saturn from Earth?

    A:

    Saturn is between 1.2 billion kilometers (0.0001268 light years) and 1.67 billion kilometers (0.0001765) from Earth, depending on where both planets are in their orbits, according to Universe Today. Earth and Saturn are farthest from each other when on opposite sides of the Sun.

    Full Answer >
    Filed Under:
  • Q:

    What are the nicknames for the planets?

    A:

    Nicknames for the eight planets in the solar system are Swift Planet for Mercury, Morning Star and Evening Star for Venus, Blue Planet for Earth, Red Planet for Mars, Giant Planet for Jupiter, Ringed Planet for Saturn, Ice Giant for Uranus and Big Blue Planet for Neptune. Pluto was once considered a planet and had the nickname Ice Planet, but it is now classified as a dwarf planet.

    Full Answer >
    Filed Under:
  • Q:

    What are the special features of Venus?

    A:

    Venus differs from the other planets of the solar system in that it rotates in the opposite direction of other planets, and it takes a total of 243 Earth days to complete a rotation. One Venusian year is shorter than one Venusian day, lasting only 225 Earth days.

    Full Answer >
    Filed Under:
  • Q:

    How many dwarf planets are there?

    A:

    There are most likely billions of dwarf planets, but the International Astronomical Union has recognized five in the solar system: Pluto, Eris, Ceres, Makemake and Haumea. Astronomers believe that there may be over 100 dwarf planets just in this solar system.

    Full Answer >
    Filed Under:

Explore