Explanation: The layers of the Saturn Nebula give a complex picture of how this planetary nebula was created. The above picture, taken in April 1996 and released last week, allows a better understanding of the mysterious process that transformed a low-mass star into a white dwarf star. A computer model indicates that the central star of NGC 7009 first expelled the green gas that now appears barrel shaped. This green gas now confines stellar winds flowing from the central star, creating a jet which forms the ansae that appear in red at the tips. Much remains unknown, including why the gas has not become turbulent.

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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: Saturn - planetary nebula - Planetarnaya tumannost' - belyi karlik - dzhet Publikacii so slovami: Saturn - planetary nebula - Planetarnaya tumannost' - belyi karlik - dzhet
Sm. takzhe: Polyarnoe siyanie vokrug severnogo polyusa Saturna Tumannost' Meduza Saturn noch'yu M27: eto ne kometa Porfirion: samyi dlinnyi dzhet ot chernoi dyry Luna zatmevaet Saturn Dzhons-Emberson-1 Vse publikacii na tu zhe temu >>