The moon

The moon is the most important desire of each amateur. The additional and superior we appreciate it, the additional we desire to identify. Its closeness make us look elder than it is, and moving quickly across the sky, where it actually runs about 12 ° per day, or about half a degree per hour (its apparent diameter).

It appears that, the unfruitful planetary shell has not changed during history known to guy because if we compare the first known maps with today, however elementary they may be does not differ in their details.

Inner symphony of the Earth

Internal Structure of the Earth. Thanks to the seismically, we know how to be the interior of our planet, the core at its center, consists especially of iron possibly solid, liquid outer core would, and then the mantle would happen a thin crust.

Fascinating structure of a typhoon seen and photographed from space by the crew of the Space Shuttle. In this extraordinary image of an event in Earth's atmosphere as comparable to that of a galaxy, Typhoon Odessa shows his eye despite being scary, fascinating. Image top right: Extraordinary photography Kliuchevskoi Volcano in Russia, obtained from space by the Shuttle.

The Earth: A water planet?

The Earth is the planet of our solar system where almost 70% of it is covered by water that makes up the oceans. This is due to the combination of the profusion of the chemical in the solar system, hydrogen, which is the most abundant element in the universe and oxygen, one of the most common in nuclear reactions that occur within the stars. To this is added that the atmosphere created in the surface conditions temperature and pressure close to the triple point of water,