Huge 'bubble' spotted in space
Friday, July 24, 2009
It looks like a bubble or maybe a camera fault, but a new recording is a newly discovered planetary nebula is visible. Dave Jurasevich of the Mount Wilson Observatory in California, met on July 6, 2008 the 'Cygnus Bubble', which is named for the constellation where the object is, while he collected images of a certain area in the sky. A few days later, the mist also photos that were made by amateur astronomers Mel Helm and Keith Quattrocchi knew and when Jurasevich sure he had a new planetary nebula had been discovered.
The bubble, which since last week officially PN G75.5 +1.7 is mentioned, there is already a while. A detailed analysis of the images of the second Palomar Sky Survey shows that sixteen years ago had the same size and brightness. Jurasevich think that the cloud over the head because it is very weak. "It is a wonderful example," said Adam Frank, University of Rochester in New York. "Spherical nebulae are very rare." One explanation is that we see a typical cylindrical object, which from our planet in a giant bubble appears. It is therefore surprising how symmetrical according to Frank.
Planetary nebulae, as mentioned, thanks to a faulty logic of previous astronomers, are formed when an 'aging' star to eight times as massive as the sun off its outer layers as clouds of luminous gas. The vast majority of these nebulae has an elliptical shape has two curves on the outside or cigar shaped. While our star a large amount of matter will emit in its end of life can not contain enough mass to also end up as a colorful nebula.