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APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

See Explanation. Clicking on the picture will download the highest resolution version available.

AE Aurigae and the Flaming Star Nebula

Explanation: Is star AE Aurigae on fire? No. Even though AE Aurigae is named the flaming star, the surrounding nebula IC 405 is named the Flaming Star Nebula , and the region appears to have the color of fire , there is no fire. Fire , typically defined as the rapid molecular acquisition of oxygen , happens only when sufficient oxygen is present and is not important in such high-energy, low-oxygen environments such as stars. The material that appears as smoke is mostly interstellar hydrogen , but does contain smoke-like dark filaments of carbon-rich dust grains . The bright star AE Aurigae , visible toward the right near the nebula's center, is so hot it is blue, emitting light so energetic it knocks electrons away from surrounding gas. When a proton recaptures an electron, light is emitted, as seen in the surrounding emission nebula . Pictured above , the Flaming Star nebula lies about 1,500 light years distant, spans about 5 light years , and is visible with a small telescope toward the constellation of the Charioteer (Auriga).

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Date November 10, 2015
Credit Image Credit & Copyright: Jess Vargas ( Sky-Astrophotography ) & Maritxu Poyal (Maritxu)
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.