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Collection:
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NASA Great Images in Nasa Collection
Collection
NASA Great Images in Nasa Collection
Collection
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Title:
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Butterfly Nebula
Title
Butterfly Nebula
Title
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Full Description:
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The Hubble Space Telescope's Wide Field and Planetary Camera 2 (WFPC2) is back at work, capturing this image of the "butterfly wing"- shaped nebula, NGC 2346. The nebula is about 2,000 light-years away from Earth in the direction of the constellation Monoceros. It represents the spectacular "last gasp" of a binary star system at the nebula's center. The image was taken on March 6, 1997 as part of the recommissioning of the Hubble Space Telescope's previously installed scientific instruments following the successful servicing of the HST by NASA shuttle astronauts in February. WFPC2 was installed in HST during the servicing mission in 1993. At the center of the nebula lies a pair of stars that are so close together that they orbit around each other every 16 days. This is so close that, even with Hubble, the pair of stars cannot be resolved into its two components. One component of this binary is the hot core of a star that has ejected most of its outer layers, producing the surrounding nebula. Astronomers believe that this star, when it evolved and expanded to become a red giant, actually swallowed its companion star in an act of stellar cannibalism. The resulting interaction led to a spiraling together of the two stars, culminating in ejection of the outer layers of the red giant. Most of the outer layers were ejected into a dense disk, which can still be seen in the Hubble image, surrounding the central star. Later the hot star developed a fast stellar wind. This wind, blowing out into the surrounding disk, has inflated the large, wispy hourglass-shaped wings perpendicular to the disk. These wings produce the butterfly appearance when seen in projection. The total diameter of the nebula is about one-third of a light-year, or 2 trillion miles.
Full_Description
The Hubble Space Telescope's Wide Field and Planetary Camera 2 (WFPC2) is back at work, capturing this image of the "butterfly wing"- shaped nebula, NGC 2346. The nebula is about 2,000 light-years away from Earth in the direction of the constellation Monoceros. It represents the spectacular "last gasp" of a binary star system at the nebula's center. The image was taken on March 6, 1997 as part of the recommissioning of the Hubble Space Telescope's previously installed scientific instruments following the successful servicing of the HST by NASA shuttle astronauts in February. WFPC2 was installed in HST during the servicing mission in 1993. At the center of the nebula lies a pair of stars that are so close together that they orbit around each other every 16 days. This is so close that, even with Hubble, the pair of stars cannot be resolved into its two components. One component of this binary is the hot core of a star that has ejected most of its outer layers, producing the surrounding nebula. Astronomers believe that this star, when it evolved and expanded to become a red giant, actually swallowed its companion star in an act of stellar cannibalism. The resulting interaction led to a spiraling together of the two stars, culminating in ejection of the outer layers of the red giant. Most of the outer layers were ejected into a dense disk, which can still be seen in the Hubble image, surrounding the central star. Later the hot star developed a fast stellar wind. This wind, blowing out into the surrounding disk, has inflated the large, wispy hourglass-shaped wings perpendicular to the disk. These wings produce the butterfly appearance when seen in projection. The total diameter of the nebula is about one-third of a light-year, or 2 trillion miles.
Full Description
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Date:
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03/06/1997
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NASA Center:
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Hubble Space Telescope Center
NASA_Center
Hubble Space Telescope Center
NASA Center
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Subject Category:
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Deep Space Studies
Subject_Category
Deep Space Studies
Subject Category
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Subject Category:
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Hubble
Subject_Category
Hubble
Subject Category
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Keywords:
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Space
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Keywords:
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Field
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Keywords:
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Camera
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Keywords:
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2
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Keywords:
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Telescope
Keywords
Telescope
Keywords
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Keywords:
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Wide
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Keywords:
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Planetary
Keywords
Planetary
Keywords
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Keywords:
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Hubble
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Keywords:
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HST
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Keywords:
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Wing
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Keywords:
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Nebula
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Keywords:
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WFPC
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Keywords:
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Constellation
Keywords
Constellation
Keywords
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Keywords:
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NG
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Keywords:
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Butterfly
Keywords
Butterfly
Keywords
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Keywords:
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2346
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Keywords:
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Monoceros
Keywords
Monoceros
Keywords
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Audience:
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General Public
Audience
General Public
Audience
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facet_what:
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Camera 2
facet_what
Camera 2
facet_what
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facet_what:
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Earth
facet_what
Earth
facet_what
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facet_what:
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FAST
facet_what
FAST
facet_what
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facet_what:
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Monoceros
facet_what
Monoceros
facet_what
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facet_what:
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Hubble Space Telescope (HST)
facet_what
Hubble Space Telescope (HST)
facet_what
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facet_when:
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1993
facet_when
1993
facet_when
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facet_when:
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March 6, 1997
facet_when
March 6, 1997
facet_when
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facet_when:
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03-06-1997
facet_when
03-06-1997
facet_when
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facet_when_year:
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1997
facet_when_year
1997
facet_when_year
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facet_when_year:
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1993
facet_when_year
1993
facet_when_year
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Image #:
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PR99-37
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original_url:
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original_url
original_url
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UID:
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SPD-GRIN-GPN-2000-00 0902
UID
SPD-GRIN-GPN-2000-00 0902
UID
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Center:
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HSTI
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Center Number:
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PR99-37
Center_Number
PR99-37
Center Number
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GRIN DataBase Number:
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GPN-2000-000902
GRIN_DataBase_Number
GPN-2000-000902
GRIN DataBase Number
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Creator-Photographer:
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NASA, Massimo Stiavelli, STScI ODButterfly Nebula
Creator-Photographer
NASA, Massimo Stiavelli, STScI ODButterfly Nebula
Creator-Photographer
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Original Source:
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DIGITAL
Original_Source
DIGITAL
Original Source
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