When a gravitational lens magnifies a background galaxy, why don’t we see the object doing the lensing, as we would if looking through an optical lens? Robert HertrickPittsburgh Gravitational lensing is one of the more beautiful and unusual phenomena physicists have predicted and astronomers have stumbled across. When the gravity of a foreground galaxy distortsContinue reading “When gravitational lensing occurs, can we see the object doing the lensing?”
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