Explanation: This pseudo-color composite of two recent Hubble Space Telescope images is a picture of a Sun-like star nearing the end of its lifetime. The exquisite details visible in this planetary nebula indicate that when the star passed through its Red Giant phase it initially shrugged off its outer atmosphere gently and evenly producing the outer faint spherical shells. As the process continued, material was apparently ejected in dense clumps producing dust clouds in the bright inner regions. The whole ejection process was amazingly rapid, taking only a few thousand years compared to a 10 billion year lifetime typical for Solar type stars. In the end the hot stellar core, now a white dwarf star, was left - seen here as a white dot at the center of the nebula. Our middle-aged Sun will experience a similar fate ... in about 5 billion years!

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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.

Publikacii s klyuchevymi slovami: nebula - NGC 7027 - belyi karlik - Evolyuciya zvezd - Planetarnaya tumannost' Publikacii so slovami: nebula - NGC 7027 - belyi karlik - Evolyuciya zvezd - Planetarnaya tumannost'
Sm. takzhe: Tumannost' Meduza M27: eto ne kometa Dzhons-Emberson-1 Raznocvetnye oblaka i zvezdy okolo ρ Zmeenosca Kol'ca vokrug tumannosti Kol'co HFG1 i Eibell 6: planetarnye tumannosti Tumannosti: ot Chaiki do Kalifornii Vse publikacii na tu zhe temu >>