Let’s say the roofs are all red, how big does it have to be to be visible as a little red dot?

  • @[email protected]
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    fedilink
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    33 months ago

    Cool idea for an SOS beacon: Just shoot an incredibly bright red light at Earth and they’ll know something bad is happening :D

    • Pennomi
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      133 months ago

      If you can shoot an incredibly bright red light, chances are you can shoot an incredibly bright radio light too.