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José Luis San Emeterio |  |
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The planets |
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You already know that, as well as our planet, there are another eight orbiting the sun. |
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| Up to Mars they are rocky bodies, then there is a series of gigantic planets, mostly formed by hydrogen: lastly there is the smaller frozen Pluto. Until the year 2006, the small and frozen Pluto was considered a planet, but that year the International Astronomical Union reconsidered its classification and Pluto became part of a different category and is now known as a "dwarf planet", together with Ceres and Eris. Click on System and you will be able to see how they move around the sun. | 
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| Clicking on Point of view you will be able to compare their real movement with the way in which we see them move. | 
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