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    terrestrial planet

    terrestrial planets of the solar system
    When the four terrestrial planets of the solar system – Mercury, Venus, Earth and Mars – are placed side by side, it's clear their size distribution is close to symmetrical, with the two largest lying between the two smallest. Image: NASA
    A small planet of high density with a solid, rocky surface. The terrestrial planets in the solar system are Mercury, Venus, Earth, and Mars. The first terrestrial planet to be found orbiting another star is OGLE-2005-BLG-390Lb.

    Compare with gas giant.


    Related entry

       • Earth-class planet


    Related category

       • PLANETS AND MOONS
       • EXTRASOLAR PLANETS AND SUBSTELLAR OBJECTS
       • ASTROBIOLOGY




    Archived news
    Many, perhaps most, nearby Sun-like stars may form rocky planets (Feb 17, 2008)



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