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I searched this forum and found no evidence of anyone who has a similar idea of "viewing" the past, so I present this one possible (although technically demanding) method of doing so. Consider that the sun's rays are constantly reflecting off the surface of our planet every day. These reflected rays travel through deep space until they strike other heavenly bodies, and reflect off of them. Some (very few) photons of light will eventually make it back to Earth. Now suppose one were able to collect those few reflected photons, and construct an image (sort of a bit-mapped image). If we could calculate which of the zillions of heavenly bodies out there form a parabola, with its focal point at the surface of the earth, we would be able to "see" Jesus, or Atilla the Hun, or Moses, etc. We would simply calculate how far out this "parabola" needs to be in order to view the desired moment in our past. This mathematically constructed parabola would act like a gigantic mirror in deep space. Because of the so few photons reaching us, it may take years or decades of computer time to construct a single image, but wouldn't it be worth it?