Dark lensing
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by TJordan
Please comment / help me on understanding the possibility of having a lense without a super heavy visible object. This question came to me on this slide after looking at the upper right quadrant, just north of tip of the red line. I thought those three dots could be a lens effect but with no object causing it I doubt it. Should I still look for and mark things like this?
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by JasonJason
Black Hole lensing
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