I love gravitational lenses! and this one, double, was discovered using HUBBLE.
A paper is submited and the pdf available for those interested by the calculations. The name of the file is interesting: jackpot_submitted.pdf Jackpot indeed 
clic on the image for the ESA images page
I think I know enough about Notalle, at least more than I wanted to know.
Well, nobody is perfect and Notalle is a good illustration
Did you know that a pioneer in the field of gravitational lenses is French? You can learn more about Laurent Nottale by reading this post on my blog. And perhaps you will be reminded of someone else…