According to ancient Greek mythology that constellation of the chair "Queen Cassiopeia" was the beautiful wife of the king Qafaus, and they have a daughter so beautiful is the Princess "Andromeda", and the queen is proud of the beauty of her daughter, Princess Andromeda and considered the most beautiful even mermaids not matched by the beauty of the universe, even angered that mermaids and complained to Neptune, the God of the sea, sent Neptune and beast scary to Ethiopia, where she lived Alandromeda, and recorded chained at one of the beaches, and when he passed (holder Perseus) near impressed by its beauty and cut the chains ferrous and rescued her after killing the monster who sent Neptune God sea.
The Galaxy "Alandromeda" Andromeda Galaxy, which calls it the Arabs also "Andromeda" of the most famous galaxies in the universe after our own galaxy "Milky Way" Galaxy Milky Way because it is the nearest galaxy to our own galaxy, where away from us 2.5 million light-years only, as it resembles our galaxy also in terms of shape they are classified under the "spiral galaxies" Spiral Galaxy also increased her fame also is that this galaxy seen with the naked eye if the sky is clear and quite dark and is a beacon moon or city lighting, has been mentioned astronomer Muslim famous Abdul Rahman Al Sufi in his book Photos eight planets and forty-called "cloud blot" they see in the form of a faint white cloud in the constellation Andromeda.
The Andromeda galaxy consists of about one trillion star thousand billion star while the estimated number of stars the Milky Way galaxy about 400 thousand million stars or 400 billion a star, and this means that the number of stars in the Andromeda galaxy outnumber stars in our galaxy much.
In the recent period revealed Space Telescope "Herschel" Herschel space observatory through the images and analyzes conducted on the Andromeda galaxy by infrared, for spiral elegant Andromeda galaxy like a match in the beauty of the galaxy between ancient Greek mythology and the perception of the modern scientific, where it was noted that the mass Andromeda galaxy much less than the mass of our Milky Way galaxy Although the number of stars Andromeda much bigger stars of our Milky Way galaxy as previously reported.
The analysis also revealed that the gas rings located on the outskirts of the Andromeda galaxy is so cool nearly absolute zero temperature of the universe and that up to 270 degrees Celsius below zero, and not more than the gas temperature of absolute zero to the fact that only a few tens!
In contrast, the temperature of the dust in the center of Andromeda galaxy is much higher with a change in spectral colors, as well as the birth of new stars near the center of the galaxy where stars and dense material, the different qualities of what is happening on the outskirts of the galaxy.
