Q:

What planet in our solar system is closest in size to Earth?

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Quick Answer

Venus is, by far, the closest match to the Earth in size. Venus has a measured diameter that is just about 95 percent that of the Earth and a planetary mass equal to 81.5 percent of the Earth's.

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What planet in our solar system is closest in size to Earth?
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Full Answer

None of the other planets in the solar system are very Earthlike. After Venus, the next-closest planet to Earth in mass and size is Mars. Mars has only half the diameter of the Earth and just over 10 percent of the mass. Venus is also similar to Earth in that it has a substantial atmosphere, though the surface pressure of Venus' atmosphere is 92 times greater than Earth's.

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Related Questions

  • Q:

    What are some facts about the planet Venus?

    A:

    Venus is the second planet from the sun in our solar system, with a size and mass similar to that of Earth. It's easy to identify in the night sky because it's the second-brightest object after the moon. It's named after Venus, the Roman goddess of love and beauty.

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  • Q:

    What is the smallest planet in the solar system?

    A:

    The smallest planet in the solar system, according to the International Astronomical Union's classification, is Mercury, with a radius of approximately 1,516 miles, which is 38 percent the size of Earth. The next smallest is Mars, with a radius of approximately 2,460 miles, or 53 percent the size of Earth.

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  • Q:

    What is the hottest planet in the solar system?

    A:

    Venus, the second planet from the sun, is the hottest planet in the solar system, with surface temperatures of around 864 degrees Fahrenheit, and there is no difference between day and night temperatures on Venus, so there is no time of day where temperatures tend to dip. This high temperature, which is hot enough to melt tin and lead, is due in part to the planet's proximity to the sun, though Venus manages to be much hotter than Mercury, which is the closest planet to the sun. Venus' extreme heat can be attributed mostly to its extremely thick atmosphere, which is 93 times thicker than Earth's atmosphere and composed mainly of carbon dioxide.

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  • Q:

    What are some facts about earth?

    A:

    Earth formed around 4.54 billion years ago and is the third planet from the Sun. It is the fifth largest planet in the solar system and the largest of the terrestrial planets. It is also the densest of all the planets.

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