Gravitational Lensing: Smiley Face

Hey, not bad…, not bad at all…. Look at panel O.

potw1506a

http://www.spacetelescope.org/images/potw1506a/
lens-hugo-nana
Premadi & Martel (2004): adsabs.harvard.edu/abs/2004ApJ…611….1P

 

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