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?
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?
Ballast waterxBallast water : Water carried in a vessel to give it stability; may be a mode of transport for invasive species
Click on the word to find out!
Research Highlights
A new analysis of the unusually long solar cycle that ended in 2008 suggests that one reason for the long cycle could be a stretching of the sun's conveyor belt, a current of plasma that circulates between...
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