Can we see the image of earth coming back to us after space travel

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SUMMARY

The discussion centers on the theoretical possibility of observing images of Earth from light reflected and traveling through space, particularly near black holes. Participants highlight the extreme conditions required for such an event, including the need for high-resolution telescopes, which currently do not exist to view Earth-sized objects beyond a few light years. The challenges include the rarity of gravitational lensing events and the low photon flux, making it impractical to capture a continuous image of Earth.

PREREQUISITES
  • Understanding of gravitational lensing phenomena
  • Familiarity with photon flux and its implications in astrophysics
  • Knowledge of telescope resolution limits and capabilities
  • Basic concepts of black hole physics
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  • Research the principles of gravitational lensing and its applications in astronomy
  • Explore advancements in telescope technology for deep-space observation
  • Study the effects of photon flux in astrophysical observations
  • Investigate the physics of black holes and their influence on light and matter
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Astronomers, astrophysicists, and science enthusiasts interested in the complexities of light travel and observational astronomy.

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i am amazed by the possibility that if the light reflected from Earth comes back to us after traveling in space for thousands of years we will be able to see our past. And this could happen around black holes. Has anyone found an image resembling earth?
 
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It would be highly unlikely, requiring a very precise set of conditions if it is possible at all. Besides-which, we don't have telescopes with enough resolution to view an earth-sized object more than a few light years away. Most of what we see of gravitational lensing takes place in/around distant galaxies.
 
Beyond the ridiculous conditions necessary and the resolving power, you also would have an incredibly low photon flux. So while you could receive photons, they would trickle in at a rate of something like a few per second. Hardly the 30fps movie I imagine you'd like to see.
 

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