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Bright stars outline the familiar shape of the Christmas Tree Cluster in this visible-light image, which has been rotated 180°. Another famous structure, called the Cone Nebula, sits atop the tree. It's located in the constellation Monoceros. (Image: NOAO/AURA/NSF) Baby Stars
The Witch Head Nebula. It glows from light reflected from bright supergiant Rigel - Orion's left foot! Although Rigel is blue, the nebula is blue because the dust tends to absorb the red part of the light and reflect the blue. (Image: George Greany)
The "Peony Nebula," as discovered by NASA's Spitzer Space Telescope. This three color infrared composite shows 3.6-micrometre light in blue, 8-micrometre light in green, and 24-micrometre light in red. The Peony nebula is the reddish cloud of dust in and around the white circle, surrounding the Peony nebular star.
A dying star is throwing a cosmic tantrum in this combined image from NASA's Spitzer Space Telescope and the Galaxy Evolution Explorer (GALEX), which NASA has lent to the California Institute of Technology in Pasadena. In death, the star's dusty outer layers are unraveling into space, glowing from the intense ultraviolet radiation being pumped out by the hot stellar core.
Nebulae, Abell 33. This image was made by BABlog regular Adam Block, using the 0.8 meter (32") Schulman Telescope at the Mount Lemmon SkyCenter. He combined images through four filters for a total observation of 630 minutes, over ten hours, to make this dream-like shot.
Blue snowball nebula (NGC7662). A planetary nebula in the constellation Andromeda. The nebula was formed by the aging central star losing its outer layers of atmosphere. (Image credit & copyright: Chris Vedeler) Mona Evans, "Galactic Winter Games" www.bellaonline.c...