this is probably the largest bubble you’ll ever see :-)

Astronomy Picture of the Day

Blown by fast winds from a hot, massive star, this cosmic bubble is huge.

Sharpless 308 – full size and credits are from : http://antwrp.gsfc.nasa.gov/apod/astropix.html
Credit & Copyright: Don Goldman

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

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