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Астронет: Астрономическая картинка дня NGC 6357: туманность Лобстер http://www.variable-stars.ru/db/msg/1452255/eng |
Credit & Copyright: Dean Carr
Explanation:
Why is the Lobster Nebula forming some of the most massive stars known?
No one is yet sure.
Cataloged as NGC 6357, the Lobster Nebula houses the open star cluster
Pismis 24 near its center --
a home to unusually bright and massive stars.
The overall
blue glow
near the inner star forming region results from the
emission of
ionized
hydrogen gas.
The surrounding nebula,
featured here,
holds a complex tapestry of gas,
dark dust, stars still forming, and newly born stars.
The intricate patterns are caused by complex interactions between
interstellar
winds,
radiation pressures,
magnetic fields, and
gravity.
NGC 6357 spans about 400 light years and lies about 8,000
light years away toward the constellation of the
Scorpion.
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