Une riche collection d'objets astronomiques est révélée dans ce pittoresque image du nuage Rho Ophiuchi de NASAÕs complexe Wide-field Infrared Explorer, ou sage. Le nuage de Rho Ophiuchi (prononcé Ôoh-fee-yoo-kiÕ et nommé d'après une étoile brillante dans la région) se trouve l'augmentation au-dessus du plan de la Voie lactée dans le ciel nocturne, en bordure de l'Ophiuchus constellations et Scorpius. ItÕs l'une des régions d'étoiles en formation le plus proche de la Terre, nous permettant de résoudre beaucoup plus de détails que dans les régions plus éloignées, comme la même nébuleuse d'Orion. L'étonnante variété de couleurs différentes dans ce

• Contributeur: NASA Image Collection
• ID de l’image: KRMT7Y
• Taille du fichier: 7,1 MB (282,4 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 1767 x 1414 px | 29,9 x 23,9 cm | 11,8 x 9,4 inches | 150dpi

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Cette image peut avoir des imperfections car il s’agit d’une image historique ou de reportage.

A rich collection of colorful astronomical objects is revealed in this picturesque image of the Rho Ophiuchi cloud complex from NASAÕs Wide-field Infrared Explorer, or WISE. The Rho Ophiuchi cloud (pronounced Ôoh-fee-yoo-kiÕ and named after a bright star in the region) is found rising above the plane of the Milky Way in the night sky, bordering the constellations Ophiuchus and Scorpius. ItÕs one of the nearest star-forming regions to Earth, allowing us to resolve much more detail than in more distant similar regions, like the Orion nebula. The amazing variety of different colors seen in this image represents different wavelengths of infrared light. The bright white nebula in the center of the image is glowing due to heating from nearby stars, resulting in what is called an emission nebula. The same is true for most of the multi-hued gas prevalent throughout the entire image, including the bluish bow-shaped feature near the bottom right. The bright red area in the bottom right is light from the star in the center Ð Sigma Scorpii Ð that is reflected off of the dust surrounding it, creating what is called a reflection nebula. And the much darker areas scattered throughout the image are pockets of cool dense gas that block out the background light, resulting in absorption (or ÔdarkÕ) nebulae. WISEÕs longer wavelength detectors can typically see through dark nebulae, but these are exceptionally opaque. The bright pink objects just left of center are young stellar objects (YSOs). These baby stars are just now forming; many of them are still enveloped in their own tiny compact nebulae. In visible light, these YSOs are completely hidden in the dark nebula that surrounds them, which is sometimes referred to as their baby blanket. We can also see some of the oldest stars in our Milky Way Galaxy in this image, found in two separate (and much more distant) globular clusters. The first cluster, M80, is on the far right edge of the image towards the top. The second, NG

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