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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.

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The Orion Nebula spans about 40 light years and is located about 1500 light years away in the same spiral arm of our Galaxy as the Sun.

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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

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Rigel and the Witch Head Nebula

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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.

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LL Ori a mlhovina Orion

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Orion Nebula in Oxygen, Hydrogen, and Sulfur Image Credit: César Blanco González

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Mlhovina v souhvězdí Orion. Je od Země vzdálená 1600 světelných let a je pozorovatelná pouhým okem. Je v ní přes 3000 hvězd, čtyři největší v jejím středu. Další vznikají v barevném prachu. Hubbleův teleskop má 25 let, NASA zveřejnila jeho nejpůsobivější snímky – Novinky.cz

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The Carina Nebula (NGC 3324) is a 3-light-year tall pillar of gas and dust surrounding several clusters of stars. Eta Carina & HD 93129A, two of the most massive & luminous stars in the Milky Way, are among them. About 10,000 ly away, it is one of the largest nebulae ever seen (larger & brighter than the Orion nebula) the top is a 3-ly-tall pillar of cool hydrogen being worn away by the radiation of nearby stars. Carina Constellation

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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.

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