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Spiral Galaxy NGC 1232
<< Yesterday 22.05.2001 Tomorrow >>
Spiral Galaxy NGC 1232
Credit: FORS1, 8.2-meter VLT Antu, ESO
Explanation: Galaxies are fascinating not only for what is visible, but for what is invisible. Grand spiral galaxy NGC 1232, captured in detail by one of the new Very Large Telescopes, is a good example. The visible is dominated by millions of bright stars and dark dust, caught up in a gravitational swirl of spiral arms rotating about the center. Open clusters containing bright blue stars can be seen sprinkled along these spiral arms, while dark lanes of dense interstellar dust can be seen sprinkled between them. Less visible, but detectable, are billions of dim normal stars and vast tracts of interstellar gas, together wielding such high mass that they dominate the dynamics of the inner galaxy. Invisible are even greater amounts of matter in a form we don't yet know - pervasive dark matter needed to explain the motions of the visible in the outer galaxy. What's out there?

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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.

Russkii tekst
Based on Astronomy Picture Of the Day
Publikacii s klyuchevymi slovami: spiral'naya galaktika - NGC 1232 - spiral galaxy - dark matter - temnaya materiya - Skrytaya massa
Publikacii so slovami: spiral'naya galaktika - NGC 1232 - spiral galaxy - dark matter - temnaya materiya - Skrytaya massa
Sm. takzhe:
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