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Questions regarding an object 'falling around' another object, due to a combination of gravity and momentum.
5
votes
Accepted
If an exoplanet transit we are seeing is 13000 light years away, are we seeing a 13000-year-...
Yes and no.
If we are asking if the light has traveled 13,000 years from that planet to our eyes, then yes.
However, if we imply that the light is 13,000 years old in relation to now, then it's not as …