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Астронет: Астрономическая картинка дня Глубокое поле: туманности в Стрельце http://variable-stars.ru/db/msg/1470717/eng |
Credit & Copyright: Emilio Rivero Padilla
Explanation:
These three bright nebulae are often featured on telescopic tours of the
constellation Sagittarius and the crowded starfields of
the central Milky Way.
In fact, 18th century cosmic tourist
Charles
Messier cataloged two of them;
M8, the large nebula just left of center,
and colorful M20 on the top left.
The third emission region includes
NGC 6559
and can be found to the right of M8.
All three are
stellar nurseries about
five thousand light-years or so distant.
Over a hundred
light-years across, the expansive M8
is also known as the
Lagoon Nebula.
M20's popular moniker is the
Trifid.
Glowing hydrogen gas creates the dominant red color of the
emission nebulae.
In striking contrast, blue hues in the
Trifid are due to dust reflected starlight.
Recently formed bright blue stars are visible nearby.
The colorful composite skyscape was recorded in 2018 in
Teide National Park in the
Canary Islands,
Spain.
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.