"It's 4,000 light years away, so the butterfly effect is irrelevant" Wouldn't time travel imply that you could go to the source 4000 years ago, so for this sch

"It's 4,000 light years away, so the butterfly effect is irrelevant" Wouldn't time travel imply that you could go to the source 4000 years ago, so for this scheme you'd need to get the data at time of creation, not at arrival. Further, once you start having time traveling all bets are off anyway. You could go back to stop the star forming. But by that point the hypothetical question becomes impossible to answer