RED+GIANT

=**__Red Giant __**=

==A Red Giant is a relatively large star, with a cool surface. They are stars with a similar mass to the Sun, or slightly greater, and Red Giants are swelling up towards the end of their lives - Our own Sun will eventually evolve into a Red Giant - billions of years from now. As the stars swell there surfaces cool dramatically, giving rise to their red colour. Red Gaints are the same as Red dwarfs and Red Super Giants except Red Giants have a much greater diameter and a greater mass than Red dwarfs, while- Red Super Gaints have a much larger mass and diameter than Red Giants. The outer atmosphere is inflated, this causes the temperature on the surface much cooler but still very hot and not able to sustain life. ==  ==When a main sequence star like our sun burns it's hydrogen away outside the circumference of the core which is mainly contrasted of helium, then if the star has he right amount of mass it will eventually become a red giant. A Red giant's temperature at the core goes up and this forces the core to shrink; but the outer layers expand and slowly cool down. ==

==Generally speaking, a Red Giant forms when stars mutate hydrogen to helium to form light. After some time, the helium submerges to the midpoint of the star, with a frame of hydrogen around this helium midpoint core. The hydrogen is exhaused therefore, it no longer can produce sufficient power aswell as force to brace the outside layers of the star. Then, when the star stars to cave in, the force aswell as the temp. go up very quickly and only stops going up when it is strong enough to let helium merge into carbon. For Example : When helium starts to burn; to circulate the remaining power generated from the helium that was burning. This causes the star to spread-out into a Red Giant. This is the Scientific Definition of a Red Giant. ==

==Group 1's report to the SETI is that we have throughly investigated all we needed to for Red Giant's, but we are sorry to inform you, no a Red Giant is not in general sutiable to host life, let alone human live. There is no water on the star, and the intense temperature and radiation will kill all humans. So SETI our offical report is that no, a Red Giant is not a sutiable location for human live by any possible scientific means known to us yet. ==

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__**References -**__ 1) http://www.space.com/businesstechnology/technology/technovel_redgiant_050401.html 2) http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/971016.html 3) Encarta Encylopedia 2005 Standard Edition