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Affichage des articles dont le libellé est ASTRONOMY - CG4: The Globule and the Galaxy. Afficher tous les articles
Affichage des articles dont le libellé est ASTRONOMY - CG4: The Globule and the Galaxy. Afficher tous les articles

21/05/2024

ASTRONOMY - CG4: The Globule and the Galaxy

 2024 May 21

The featured image shows a distant galaxy on the left next to a 
gas cloud on the right. An opening in the gas cloud is on the same side
as the galaxy.
Please see the explanation for more detailed information.

CG4: The Globule and the Galaxy
Image Credit: CTIO, NOIRLab, DOE, NSF, AURA; Processing: T. A. Rector (U. Alaska Anchorage/NSF’s NOIRLab), D. de Martin & M. Zamani (NSF’s NOIRLab)

Explanation: Can a gas cloud eat a galaxy? It's not even close. The "claw" of this odd looking "creature" in the featured photo is a gas cloud known as a cometary globule. This globule, however, has ruptured. Cometary globules are typically characterized by dusty heads and elongated tails. These features cause cometary globules to have visual similarities to comets, but in reality they are very much different. Globules are frequently the birthplaces of stars, and many show very young stars in their heads. The reason for the rupture in the head of this object is not yet known. The galaxy to the left of the globule is huge, very far in the distance, and only placed near CG4 by chance superposition.

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