Nombre total de pages vues

Affichage des articles dont le libellé est ASTRONOMY - Stardust in the Perseus Molecular Cloud. Afficher tous les articles
Affichage des articles dont le libellé est ASTRONOMY - Stardust in the Perseus Molecular Cloud. Afficher tous les articles

26/01/2025

ASTRONOMY - Stardust in the Perseus Molecular Cloud

2025 January 25
See Explanation.  Clicking on the picture will download
the highest resolution version available.

Stardust in the Perseus Molecular Cloud
Image Credit & Copyright: Jeff Schilling

Explanation: Clouds of stardust drift through this deep skyscape, across the Perseus molecular cloud some 850 light-years away. Dusty nebulae reflecting light from embedded young stars stand out in the nearly 4 degree wide field of view. With a characteristic bluish color reflection nebula NGC 1333 is prominent near center. Hints of contrasting red emission from Herbig-Haro objects, the jets and shocked glowing gas emanating from recently formed stars, are scattered across the dusty expanse. While many stars are forming in the molecular cloud, most are obscured at visible wavelengths by the pervasive dust. The chaotic environment surrounding NGC 1333 may be similar to one in which our own Sun formed over 4.5 billion years ago. At the estimated distance of the Perseus molecular cloud, this cosmic scene would span about 80 light-years. 

18/03/2021

ASTRONOMY - Stardust in the Perseus Molecular Cloud

 2021 March 18

See Explanation.  Clicking on the picture will download
the highest resolution version available.

Stardust in the Perseus Molecular Cloud
Image Credit & CopyrightKerry-Ann Lecky HepburnStuart Heggie

Explanation: Clouds of stardust drift through this deep skyscape, across the Perseus molecular cloud some 850 light-years away. Dusty nebulae reflecting light from embedded young stars stand out in the nearly 2 degree wide telescopic field of view. With a characteristic bluish color reflection nebula NGC 1333 is at center, vdB 13 at top right, with rare yellowish reflection nebula vdB 12 near the top of the frame. Stars are forming in the molecular cloud, though most are obscured at visible wavelengths by the pervasive dust. Still, hints of contrasting red emission from Herbig-Haro objects, the jets and shocked glowing gas emanating from recently formed stars, are evident in NGC 1333. The chaotic environment may be similar to one in which our own Sun formed over 4.5 billion years ago. At the estimated distance of the Perseus molecular cloud, this cosmic scene would span about 40 light-years.

ARCHEOLOGIE - Toutânkhamon - Le trésor de Anubis - le dieu funéraire

Le tombeau de Toutânkhamon a été trouvé dans une pièce, appelée chambre funéraire. À l'intérieur, la « Maison d'éternité du pharaon...