About 29.2% of Earth's surface is land with remaining 70.8% is covered with water. "content": "Third planet from the Sun and the only known planet to harbor life. "internal": "./assets/planet-venus-internal.svg", The only volcanic complex of this size on Earth is the Big Island of Hawaii.", Venus has several times as many volcanoes as Earth, and it has 167 large volcanoes that are over 100 km (60 mi) across. "content": "Much of the Venusian surface appears to have been shaped by volcanic activity. Like that of Earth, Venusian core is most likely at least partially liquid because the two planets have been cooling at about the same rate.", "content": "The similarity in size and density between Venus and Earth suggests they share a similar internal structure: a core, mantle, and crust. As the brightest natural object in Earth's night sky after the Moon, Venus can cast shadows and can be, on rare occasions, visible to the naked eye in broad daylight.", It is named after the Roman goddess of love and beauty. "content": "Venus is the second planet from the Sun. "geology": "./assets/geology-mercury.png" "internal": "./assets/planet-mercury-internal.svg", It is more heterogeneous than either Mars's or the Moon’s.", "content": "Mercury's surface is similar in appearance to that of the Moon, showing extensive mare-like plains and heavy cratering, indicating that it has been geologically inactive for billions of years. The planet's density is the second highest in the Solar System at 5.427 g/cm3, only slightly less than Earth's density.", "content": "Mercury appears to have a solid silicate crust and mantle overlying a solid, iron sulfide outer core layer, a deeper liquid core layer, and a solid inner core. Mercury is one of four terrestrial planets in the Solar System, and is a rocky body like Earth.", Its orbit around the Sun takes 87.97 Earth days, the shortest of all the Sun's planets. "content": "Mercury is the smallest planet in the Solar System and the closest to the Sun.
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