Explore Planets

It may surprise you, but astronomers don't really have a good definition of a "planet". Because ...
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Mercury, the planet nearest the Sun, is also the smallest planet in the Solar System. Only ...
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Fair but inhospitable Venus, a "Sister" planet to the Earth that is very different from our ...
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Earth, our home planet, is a beautiful blue and white ball when seen from space. ...
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Mars, Earth's outer neighbor, is the fourth planet from the Sun. Mars' bright appearance and ...
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Jupiter is the largest planet in the solar system. When approached from afar, its fantastic ...
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Saturn, the sixth planet from the Sun, has the most spectacular set of rings in the solar system. ...
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Uranus, the seventh planet from the Sun, has its spin axis almost in the plane of its orbit ...
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Neptune, the eighth and furthest planet from the Sun, is a very cold place. Its bluish color ...
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In 2006 the International Astronomical Union (IAU) approved a new classification scheme for ...
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Did you know?
Do you know
who discovered Uranus?
Did you know that Pluto is not always outside the orbit of Neptune?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
PlasmoidxPlasmoid : A structure of plasma and magnetic fields proposed to explain several natural phenomena including magnetic bubbles in magentospheres and ball lightning
Click on the word to find out!
Research Highlights
A new study has found that a mixing of two different types of magma is the key to the historic eruptions of Mount Hood, Oregon's tallest mountain, and that eruptions often happen in a relatively short...
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