Astronomy Picture of the Day (original) (raw)

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.

2016 March 23

The Great Nebula in Carina
Image Credit & Copyright: Damian Peach/SEN

Explanation: In one of the brightest parts ofMilky Way lies a nebula where some of the oddest things occur. NGC 3372, known as theGreat Nebula in Carina, is home to massive stars and changing nebulas. The Keyhole Nebula (NGC 3324), the bright structure just above the image center, houses several of these massive stars and has itself changed its appearance. The entire Carina Nebulaspans over 300 light years and lies about 7,500 light-years away in the constellation of Carina. Eta Carinae, the most energetic starin the nebula, was one of the brightest stars in the sky in the 1830s, but then faded dramatically.Eta Carinae is the brightest starnear the image center, just left of the Keyhole Nebula. While Eta Carinae itself maybe on the verge of a supernova explosion,X-rayimages indicate that much of the Great Carina Nebula has been a veritablesupernova factory.

Tomorrow's picture: open space

Authors & editors: Robert Nemiroff(MTU) &Jerry Bonnell (UMCP)
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