APOD: photo by Farmakopoulos Antonis; The California Nebula; Is in the Orion Arm of the Milky Way, as does our Sun, about 1500 ly distance. Also known as NGC 1499, is an emission nebula; The bright star to the right is most likely providing the starlight that ionizes much of the nebula's gas; located in Perseus, not far from the Pleiades.
LOOK: Here Are The 27 Most Mind-Blowing Space Photos Of 2013
Part of the larger constellation Orion, the Horsehead Nebula is captured in infrared wavelengths for the first time. (Image courtesy STScI/AURA/ESA/NASA) See more of the week's best space photos: http://on.natgeo.com/11CwnUo
The Great Nebula in Orion is a intriguing place. Visible to the unaided eye, it appears as a small fuzzy patch in the constellation of Orion. But this image, an illusory-color composite of four colors of infrared light taken with the Earth orbiting WISE observatory, shows the Orion Nebula to be a bustling neighborhood or recently formed stars, hot gas, and dark dust.
IC 4592: The Blue Horsehead Reflection Nebula Do you see the horses head? What you are seeing is not the famous Horsehead nebula toward Orion but rather a fainter nebula that only takes on a familiar form with deeper imaging.