what are the unique features of the earth among other planets?
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To enable life, this most special of attributes, planet Earth has a number of ideal features. It is unique among planets in our solar system for having water in its liquid form at the surface, in an amount conducive to life evolving.
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Terrestrial planets are Earth-like planets made up of rocks or metals with a hard surface. Terrestrial planets also have a molten heavy-metal core, few moons and topological features such as valleys, volcanoes and craters.
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['Terrestrial Planets. Mercury, Venus, Earth, Mars (Inner Planets) Small (about the size of the Earth) Rocky, usually with large iron cores. ... ', "Jovian Planets. Jupiter, Saturn, Uranus, Neptune (Outer Planets) Large (about 10 times the size of the Earth) No solid surface -- ``Gas Giants''"]
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Mars and Earth are very different planets when it comes to temperature, size, and atmosphere, but geologic processes on the two planets are surprisingly similar. On Mars, we see volcanoes, canyons, and impact basins much like the ones we see on Earth.
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Earth and the other three inner planets of our solar system (Mercury, Venus and Mars) are made of rock, containing common minerals like feldspars and metals like magnesium and aluminum. So is Pluto. The other planets are not solid. Jupiter, for instance, is made up mostly of trapped helium, hydrogen, and water.
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['Hydrosphere. This is composed of all water on or near the earth. ... ', 'Biosphere. This is composed of all living organisms. ... ', 'Atmosphere. This is the body of air which surrounds our planet. ... ', 'Lithosphere. This is the solid, rocky crust covering entire planet.']
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All four giant planets in our solar system - Jupiter, Saturn, Uranus and Neptune - have very thick, deep atmospheres. The smaller, rocky planets - Earth, Venus and Mars - have much thinner atmospheres hovering above their solid surfaces. A few moons also have atmospheres, though most of them are quite thin.
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Physical characteristics of Vesta Vesta is unique among asteroids in that it has light and dark patches on the surface, much like the moon. Ground-based observations determined that the asteroid has basaltic regions, meaning that lava once flowed across its surface.
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Like the other terrestrial planets, Earth has a rocky surface with mountains and canyons, and a heavy-metal core. Earth's atmosphere contains water vapor, which helps to moderate daily temperatures.
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The terrestrial planets are all composed of solid materials such as rock or silicate, contain metals throughout their crusts, and all possess a solid surface. Another similarity is that all travel around the sun in a oval, or elliptic, orbit, and at various eccentricities.
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Terrestrial planets also have a molten heavy-metal core, few moons and topological features such as valleys, volcanoes and craters. In our solar system, there are four terrestrial planets, which also happen to be the four closest to the sun: Mercury, Venus, Earth and Mars.
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['Plate Tectonics Keep the Planet Comfortable: ... ', 'Earth is Almost a Sphere: ... ', 'Earth is Mostly Iron, Oxygen and Silicon: ... ', "70% of the Earth's Surface is Covered in Water: ... ", "The Earth's Atmosphere Extends to a Distance of 10,000 km: ... ", "The Earth's Molten Iron Core Creates a Magnetic Field:"]
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['Distance from Sun: Earth is at the right distance from the Sun, the star it orbits. ... ', 'Atmosphere: The presence of an atmosphere makes Earth livable. ... ', 'Water: Presence of water is another key factor. ... ', 'Time for evolution: Earth is lucky to have a star as long-living as Sun.']
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The different parts of the Earth are the crust, mantle, outer core, and inner core.
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The four inner planets, or terrestrial planets, have solid, rocky surfaces. Mercury is the smallest planet and the closest to the Sun. It has an extremely thin atmosphere, with surface temperatures ranging from very hot to very cold.
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Planet Earth: Facts About Its Orbit, Atmosphere & Size. ... Earth is the fifth largest of the planets in the solar system. It's smaller than the four gas giants — Jupiter, Saturn, Uranus and Neptune — but larger than the three other rocky planets, Mercury, Mars and Venus.
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Each layer has its own properties, composition, and characteristics that affects many of the key processes of our planet. They are, in order from the exterior to the interior – the crust, the mantle, the outer core, and the inner core. Let's take a look at them and see what they have going on.