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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.

Pictured are two red nebulas on the far left and center, and a comet complete with a green coma and a long blue ion tail on the far right. Please see the explanation for more detailed information.Pictured are two red nebulas on the far left and center, and a comet complete with a green coma and a long blue ion tail on the far right. Please see the explanation for more detailed information.

The Flaming Star Nebula

Explanation: Is star AE Aurigae on fire? No. Even though AE Aurigae is named the Flaming Star and the surrounding nebula IC 405 is named the Flaming Star Nebula , and even though the nebula appears to some like a swirling flame , 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 bright star AE Aurigae occurs near the center of the Flaming Star Nebula and is so hot it glows 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 . Captured here three weeks ago, the Flaming Star Nebula is visible near the composite image's center, between the red Tadpole Nebula on the left and blue-tailed Comet ZTF on the right. 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).

Date March 1, 2023
Credit Image Credit & Copyright: Thomas Röell
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.