Haven't the last few nights been great. Pity about the current cloud.
I love finding out info about unusual stuff.
These links might explain the what the ESB classification means.
News to me, I hadn't heard of it before!! Cheers, paul.
http://en.wikipedia.org/wiki/Starburst_galaxy
http://antwrp.gsfc.nasa.gov/cgi-bin/...arburst+galaxy