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Ask [email protected]English • 2 months ago

How large would a city/base on the moon have to be in order to be visible with the unaided human eye from earth?

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How large would a city/base on the moon have to be in order to be visible with the unaided human eye from earth?

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Ask [email protected]English • 2 months ago

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

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3•2 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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  13•2 months ago
  If you can shoot an incredibly bright red light, chances are you can shoot an incredibly bright radio light too.

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