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Τετάρτη 24 Δεκεμβρίου 2025

Astronomy Picture Of The Day: NGC 2264, about 2,500 light-years away is one of the Milky Way's most active stellar nurseries!

 

#NASA, #Space, #astronomy, #διάστημα,

That's a stunning region indeed! NGC 2264, about 2,500 light-years away in Monoceros, is one of the Milky Way's most active stellar nurseries—a chaotic cradle of star birth where massive, hot young stars carve and illuminate vast clouds of gas and dust.Your description nails the key features perfectly: The Christmas Tree Cluster gets its festive name from the triangular arrangement of bright young stars. In the classic orientation (often flipped with south up), it truly resembles a cosmic tree, complete with the dark Cone Nebula as the "topper." The Cone Nebula is that iconic dark pillar—a 7-light-year-long finger of cold molecular gas and dust stubbornly resisting the erosive ultraviolet radiation and stellar winds from nearby OB stars (like the bright variable star S Monocerotis at the cluster's heart). The Fox Fur Nebula (also known as Sh2-273) earns its nickname from the intricate, rippled textures of bluish reflection nebulosity and reddish emission gas that evoke the luxurious pelt of a fox—especially prominent around the central bright regions.Here are several beautiful wide-field views capturing the full complex in various color palettes and orientations, showcasing how the interplay of emission, reflection, and dark nebulae creates this holiday-themed wonder:This whole area is a prime example of triggered star formation in action, with ongoing observations from ground-based telescopes and archives revealing new details about protostars, jets, and outflows.

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