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Q&A Spying on another star system

I want to find out what's going on in another star system, but I don't want to go there. How feasible is it to just build a big telescope and take a look? Scenario: Earth does not respond to commu...

6 answers  ·  posted 9y ago by Leushenko‭  ·  last activity 5y ago by Leushenko‭

Question space reality-check