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What is Venus Made Of?


Venus is often called Earth’s twin planet. And when it comes to the composition, Venus is very similar to Earth. But it does have a few significant differences.

The diameter of Venus is just 650 km less than the Earth’s, and its mass is 81.5% of planet Earth.

Looking inside Venus is much harder. Here on Earth, scientists probe the structure of the Earth’s core by studying how seismic waves from earthquakes bounce off the interior of the planet. Only a few landers have reached the surface of Venus, and they didn’t last long.

Since Earth and Venus have similar size and density, scientists assume that Venus has a similar internal structure to Venus, with a core, mantle, and crust. The interior of Venus is probably at least partially liquid.

One big difference between Earth and Venus; however, is the fact that Venus has no plate tectonics. This is probably because the surface and atmosphere of Venus are so dry and hot. This reduces the amount of heat lost from the interior of the planet, and prevents it from cooling. This might also explain why Venus doesn’t have an internally magnetic field; such as the one generated by Earth.

About 

Fraser Cain is the publisher of Universe Today. He's also the co-host of Astronomy Cast with Dr. Pamela Gay.

Comments on this entry are closed.

  • Tori December 2, 2008, 7:30 AM

    Pluto is not a planet because it is to far awat from the Sun and other planets…….

  • Yael Dragwyla December 3, 2008, 11:53 PM

    Goddess on the mountain top
    Burning like a silver flame
    The summit of beauty and love
    And Venus was her name

    She’s got it
    Yeah, baby, she’s got it
    I’m your Venus, I’m your fire
    At your desire
    Well, I’m your Venus, I’m your fire
    At your desire

    Her weapons were her crystal eyes
    Making every man a man
    Black as the dark night she was
    Got what no-one else had
    Wa!

    She’s got it
    Yeah, baby, she’s got it
    I’m your Venus, I’m your fire
    At your desire
    Well, I’m your Venus, I’m your fire
    At your desire

    Goddess on the mountain top
    Burning like a silver flame
    The summit of beauty and love
    And Venus was her name

    She’s got it
    Yeah, baby, she’s got it
    I’m your Venus, I’m your fire
    At your desire
    Well, I’m your Venus, I’m your fire
    At your desire

  • dickmouth January 13, 2009, 3:51 PM

    Bahahhaah you guys are obsessed with venus!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  • yahoo girl May 12, 2011, 9:42 AM

    thanks for doing my home work!

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