Saturday, October 24, 2009

About us

Universe:

The Universe is generally defined as everything that physically exists: the entirety of space and time, all forms of matter, energy and momentum, laws and physical constants that govern them. However, the term "universe" can be used in slightly different contextual senses, to refer to concepts as the cosmos, the world or nature.

Nebulae:

The nebulae are regions of the interstellar medium consisting of gas (mostly hydrogen and helium) and dust. They have a significant cosmological importance because many of them are where stars are formed by condensation and aggregation of matter, at other times they are the remnants of stars that are already extinct.

Planet:

The planet definition has proved elusive despite being one of the more familiar terms of astronomy. The word planet has existed for thousands of years, not only in science but as part of a broader culture, applied in its long history to all sorts of things, from clairvoyance to environmentalism. That the solar system has eight planets from the Sun and is a well known and repeated.

Star:

In a general sense, we can say that a star is any celestial body that shines anew at night. However, a more technical and precise, one might say that this is an accumulation of matter in plasma state in a continuous process of collapse, in which various forces interact to balance this process in a hydrostatic state. The time it takes to collapse the cluster, depends on the time at which the various forces no longer balance the hidrostásis that shapes the star.

Galaxy:

A galaxy is a massive system of stars, gas clouds, planets, dust, dark matter and perhaps dark energy, gravitationally bound. The number of stars forming a galaxy varies from dwarfs, with 107, to the giant, with 1012 stars. As part of a galaxy substructures exist as nebulae, star clusters and multiple star systems.



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