Tuesday, 8 March 2016

optics - Is it feasible to detect light emitted from planet earth 2,000 years ago by reflection from an object situated 1000 light years away?


The possibility though remote, is intriguing as we may be able in the future to actually "see" our own planet's history. Though sounding science fiction, if we are able to detect bodies in space that are able of reflecting light emitted from our planet earth, using amplification systems and filters,this may - if possible, give us a tool of utmost importance.




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