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Астронет: Астрономическая картинка дня IC 4628: туманность Креветка http://variable-stars.ru/db/msg/1905579/eng |
Credit & Copyright: Daniel Stern
Explanation:
South of Antares, in the tail of
the nebula-rich constellation
Scorpius,
lies emission nebula IC 4628.
Nearby hot,
massive stars, millions of years young,
irradiate the
nebula with invisible
ultraviolet light, stripping electrons from atoms.
The electrons eventually recombine with the atoms to produce the
visible nebular glow,
dominated by the red emission of hydrogen.
At an estimated distance of 6,000 light-years, the
region shown
is about 250
light-years across,
spanning over three full moons on the sky.
The nebula is also
cataloged as Gum 56 for Australian astronomer
Colin Stanley Gum,
but seafood-loving deep sky-enthusiasts might
know this cosmic cloud as the
Prawn
Nebula.
The
graceful color image is a new astronomical
composition taken over several nights in April from
Rio Hurtado,
Chile.
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.