The emission nebulae are large clouds of gas and interstellar dust, where stars are born.
The emission nebulae They are bright clouds of gas and dust that welcome young stars inside.
At first, the nebulae are cold and dark. As the interstellar material concentrates, the pressure and temperature in the center of the nebula increase. When they manage to accumulate enough matter, a star is born inside the nebula.
The new star heats the nebula. The hot gas is illuminated and the dark nebula becomes an emission nebula.
New stars form in the emission nebula while the young women illuminate it more and more. The emission nebulae create the most varied forms, and are the most beautiful images of the Cosmos.
Some of the most beautiful and well-known emission nebulae are:
Eagle Nebula: 7,000 light years away, in the constellation of the Serpent. It has an extension of 70 light years. In it are the famous Pillars of Creation. There are three huge pillars of material, dust and gas several light years in length. The Hubble photographed them in 1995 and they are probably the most beautiful image of the Cosmos taken to date.
Orion Nebula: It is the brightest and best known. It is 1,500 light years from Earth, in the Orion constellation, and measures about 30 light years. It is the closest emission nebula. It can be seen even with the naked eye, like a white spot on the left under the Orion Belt. It was the first nebula to be photographed, almost 150 years ago.
NGC604 Nebula: Located in the Triangle galaxy, it is the largest emission nebula known so far. It measures 1,500 light years in diameter and is more than 6,000 times brighter than the Orion nebula. It is the area of the Local Group where more stars are born and, therefore, in NGC604 there are many young stars.
Carina Nebula: It is about 8,000 light years away, in the constellation of Carina, in the southern hemisphere. It is one of the largest and brightest nebulae known. Its extension exceeds 300 light years. It contains several of the most massive stars of the Milky Way.
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