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Nov 23, 2020 at 23:52 comment added Joe Jobs Ok asked here - space.stackexchange.com/questions/48733/…
Nov 23, 2020 at 23:12 comment added uhoh @JoeJobs the highest power laser pulses have steadily increased and there's no limit in sight (see Petawatts to Exawatts) Physical object analogies don't apply. It's impossible to extrapolate another century or two into the future, but I think that "the future is bright" (pun intended) and could even be X-rays rather than light. I know there is scholarly work on the best wavelengths for interstellar communications, so a separate question about that may receive some "enlightening" answers. :-)
Nov 23, 2020 at 23:03 history edited uhoh CC BY-SA 4.0
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Nov 23, 2020 at 23:03 comment added Joe Jobs Maybe they cant produce much more than us because of limitations. Cars today are not much faster than 100 years ago. Airplanes are not much faster than 60 years ago. You still need a lot of power to transmit radio signal that far.
Nov 23, 2020 at 23:02 history edited uhoh CC BY-SA 4.0
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Nov 23, 2020 at 22:52 history edited uhoh CC BY-SA 4.0
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Nov 23, 2020 at 22:42 history edited uhoh CC BY-SA 4.0
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Nov 23, 2020 at 22:36 history edited uhoh CC BY-SA 4.0
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Nov 23, 2020 at 22:17 history answered uhoh CC BY-SA 4.0