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19:50 Sunset @ 19:50 united states

Astronomy Picture of the Day


The Trifid Nebula is Stars and Dust

Bild Upload am 29. July 2010 00:00

Bild Note: 4 (1 Vote)

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#112686 by [z]Barbara Harris @ 29. Jul 00:00 - nach oben -
The Trifid Nebula is Stars and Dust


Explanation:
Unspeakable beauty and unimaginable bedlam can be found
together in the
Trifid Nebula.

Also known as M20,
this photogenic nebula is visible
with good binoculars towards the constellation of Sagittarius.

The energetic processes of
star formation create not only the colors but the
chaos.

The red-glowing gas
results from high-energy starlight striking interstellar
hydrogen gas.

The dark dust
filaments that lace
M20 were created in the atmospheres of cool
giant stars and in the debris from
supernovae explosions.

Which bright young stars light up the blue
reflection nebula is still
being investigated.

The light from
M20
we see today left perhaps 3,000 years ago,
although the exact distance remains unknown.

Light takes about 50 years to cross
M20.




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