Explore Planets
![](/images/icons/systemplanet_whatis.jpg)
Do you know what a planet is? If so, you are doing better than professional astronomers! Right ...
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![](/images/icons/systemplanet_mercury.jpg)
Mercury, the planet nearest the Sun, is the second smallest planet in the solar system. Only ...
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![](/images/icons/systemplanet_venus.jpg)
Fair but inhospitable Venus, a "Sister" planet to the Earth that is very different from our ...
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![](/images/icons/systemplanet_earth.jpg)
Earth, our home planet, is a beautiful blue and white ball when seen from space. ...
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![](/images/icons/systemplanet_mars.jpg)
Mars, Earth's outer neighbor, is the fourth planet from the Sun. Mars' bright appearance and ...
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![](/images/icons/systemplanet_jupiter.jpg)
Jupiter is the largest planet in the solar system. When approached from afar, its fantastic ...
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![](/images/icons/systemplanet_saturn.jpg)
Saturn, the sixth planet from the Sun, has the most spectacular set of rings in the solar system. ...
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![](/images/icons/systemplanet_uranus.jpg)
Uranus, the seventh planet from the Sun, has its spin axis almost in the plane of its orbit ...
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![](/images/icons/systemplanet_neptune.jpg)
Neptune, the eighth and furthest planet from the Sun, is a very cold place. Its bluish color ...
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![](/images/icons/systemplanet_pluto.jpg)
In 2006 the International Astronomical Union (IAU) approved a new classification scheme for ...
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Did you know?
Did you know that there is a
strange hexagon in the atmosphere at the northern pole of Saturn?
Do you know how Neptune was discovered?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
AdiabaticxAdiabatic : An adiabatic process happens without any heat transfer with the environment.
Click on the word to find out!
Research Highlights
The Earth's mantle is a rocky, solid shell that is between the Earth's crust and the outer core, and makes up about 84 percent of the Earth's volume. The mantle is made up of many distinct portions or...
Read more![](/olpa/images/baffin_mantle_small.jpg)