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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.

Grand Spiral Galaxy NGC 7424

Explanation: The grand , winding arms are almost mesmerizing in this face-on view of NGC 7424, a spiral galaxy with a prominent central bar . About 40 million light-years distant in the headlong constellation Grus , this island universe is also about 100,000 light-years across making it remarkably similar to our own Milky Way . Following along the winding arms, many bright clusters of massive young stars can be found. The star clusters themselves are several hundred light-years in diameter. And while massive stars are born in the arms of NGC 7424, they also die there. Notably, this galaxy was home to a powerful stellar explosion, supernova SN 2001ig , which faded well before the above image was recorded.

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Date January 8, 2013
Credit Image Credit & Copyright: SSRO -South (S. Mazlin, J. Harvey, D. Verschatse, R. Gilbert) & Kevin Ivarsen (UNC/CTIO/ PROMPT )
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.