File:Bok globules in IC2944.jpg
From Infogalactic: the planetary knowledge core
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:21, 14 January 2017 | | 1,480 × 1,498 (1.6 MB) | 127.0.0.1 (talk) | <p>Strangely glowing dark clouds float serenely in this remarkable and beautiful image taken with the <a href="https://en.wikipedia.org/wiki/Hubble_Space_Telescope" class="extiw" title="en:Hubble Space Telescope">Hubble Space Telescope</a>. These dense, opaque dust clouds — known as <a href="https://en.wikipedia.org/wiki/globules" class="extiw" title="en:globules">globules</a> — are silhouetted against nearby bright stars in the busy star-forming region, <a href="https://en.wikipedia.org/wiki/IC_2944" class="extiw" title="en:IC 2944">IC 2944</a>. </p> <p>Astronomer <a href="https://en.wikipedia.org/wiki/A._David_Thackeray" class="extiw" title="en:A. David Thackeray">A.D. Thackeray</a> first spied the globules in IC 2944 in 1950. Globules like these have been known since Dutch-American astronomer <a href="https://en.wikipedia.org/wiki/Bart_Bok" class="extiw" title="en:Bart Bok">Bart Bok</a> first drew attention to such objects in 1947. </p> <p>But astronomers still know very little about their origin and nature, except that they are generally associated with areas of star formation, called <a href="https://en.wikipedia.org/wiki/HII_regions" class="extiw" title="en:HII regions">HII regions</a> due to the presence of <a href="https://en.wikipedia.org/wiki/hydrogen_gas" class="extiw" title="en:hydrogen gas">hydrogen gas</a>. IC 2944 is filled with gas and dust that is illuminated and heated by a loose cluster of massive stars. These stars are much hotter and much more massive than our Sun. </p> |
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