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Дата изменения: Mon Aug 26 22:22:13 2013
Дата индексирования: Fri Feb 28 10:01:34 2014
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Поисковые слова: comet tail
Bright Planetary Nebula NGC 7027 from Hubble
Astronomy Picture of the Day
    


Bright Planetary Nebula NGC 7027 from Hubble
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Bright Planetary Nebula NGC 7027 from Hubble
Credit & Copyright: Hubble Legacy Archive, ESA, NASA; Processing: Delio Tolivia Cadrecha
Explanation: It is one of the brightest planetary nebulae on the sky -- what should it be named? First discovered in 1878, nebula NGC 7027 can be seen toward the constellation of the Swan (Cygnus) with a standard backyard telescope. Partly because it appears there as only an indistinct spot, it is rarely referred to with a moniker. When imaged with the Earth-orbiting Hubble Space Telescope, however, great details are revealed. Studying Hubble images of NGC 7027 have led to the understanding that it is a planetary nebula that began expanding about 600 years ago, and that the cloud of gas and dust is unusually massive as it appears to contain about three times the mass of our Sun. Pictured above in assigned colors, the resolved, layered, and dust-laced features of NGC 7027 might remind sky enthusiasts of a familiar icon that could be the basis for an informal name. Please feel free to make suggestions -- some suggestions are being recorded, for example, in an online APOD discussion forum.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Based on Astronomy Picture Of the Day

Publications with keywords: NGC 7027 - planetary nebula - HST
Publications with words: NGC 7027 - planetary nebula - HST
See also:
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