Astronomy Picture of the Day · May 23, 2011

An Unexpected Flare from the Crab Nebula

The Astronomy Picture of the Day for May 23, 2011 is “An Unexpected Flare from the Crab Nebula,” an image. It is credited to Credit: NASA , DOE , Fermi LAT , R. Buehler ( SLAC , KIPAC ). The original explanation runs about 182 words.

From the explanation

“Why does the Crab Nebula flare? No one is sure.”

— APOD editors, May 23, 2011

Read the full explanation on science.nasa.gov

At a glance

Date: May 23, 2011
Type: Image
Credit: Credit: NASA , DOE , Fermi LAT , R. Buehler ( SLAC , KIPAC )
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 182 words