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Right now, an observer 39 light years away would be receiving our light and thus seeing the earth of 39 years ago. So these planets, should they have observers
by ctack 10y ago
Right now, an observer 39 light years away would be receiving our light and thus seeing the earth of 39 years ago.
So these planets, should they have observers and amazing telescopes would be able to see the Earth of 1977.
- ctack 10y agoFor a billion light year distant planet, they would be seeing earth of a billion years ago.