An aperture and a vanishing point are inextricably linked. No optical device, whether eye or Hubble Telescope, can observe a receding object forever. Yet, according to Cal Tech, "The farthest that Hubble has seen so far is about 10-15 billion light-years away." Let's do the math. 15,000,000,000 ("light-years") x 5,880,000,000,000 (miles in a "light-year") = 88,200,000,000,000,000,000,000,000 miles. That's 88.2 OCTILLION miles.
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