European Southern Observatory

Shell consisting of gas, break away from the surface of these stars, often forming intricate and beautiful shapes, and shine, illuminating harsh ultraviolet radiation from the cooling hot central star. Please visit Peter Asaro if you seek more information. Main Ring Nebula, Helix is a width of about two light years, or half the distance between the Sun and its nearest stellar neighbor. Despite the fact that the picture looks pretty impressive Nebula, Helix is difficult to see visually, as coming from her little light is scattered over a wide portion of the sky. The history of this discovery quite dark. and gain more knowledge.. For the first time this name appeared in the list of new objects, compiled German astronomer Karl Ludwig Harding (Karl Ludwig Harding) in 1824. Title Helix (snail) comes from a rough spiral shape, which can be seen in earlier photographs. Although the Helix nebula is very much like a "pie" studies have shown that it may consist of at least two separate discs with outer rings, and fibers.

The brighter inner disk appears to be expanding at a rate of about 100,000 kilometers per hour (about 62.000 miles per hour), and its formation of the required 12,000 years. Because Helix is relatively close distance from us – it covers an area of the sky, equal to about a quarter of the full moon – you can explore in much greater detail than most other planetary nebulae, by the way, it was found that the nebula has an unexpected and complicated structure. All that is inside of the ring, represented by small lumps (the bubbles), which are known as "Comet balls, 'with a slightly luminous tails stretches from the central star. Despite the fact that they look like tiny ball of each of these has the size of our solar system. These tangles have been thoroughly studied using both telescopes – the very large telescope of the European Southern Observatory (ESO) and the Hubble Space Telescope (Hubble) nasa (NASA-National Aeronautics and Space Administration-National Aeronautics and Space Administration space) / esa (ESA), but there are still unclear. A careful look into the central part of the object can detect not only the glomeruli but also a number of distant galaxies that are viewed through thinned the veil of glowing gas extending. Some of them, apparently, are collected in separate groups of galaxies, scattered in different parts of the picture. Blue-green glow in the center of the nebula Helix caused by atoms oxygen, which are illuminated by an intense ultraviolet radiation with a temperature of 120.000 degrees Celsius (about 216.000 degrees Fahrenheit (F)), emitted by the central star and the hot gas. Further, outside Stars and away from the ring of balls is becoming more noticeable red color, caused by hydrogen and nitrogen.

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