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kendiggy t1_ixcgntm wrote

Reply to comment by seanyseanerson in Just how dark is deep space? by ArmchairSpinDoctor

SONAR (SOund Navigation And Ranging) wouldn't work since sound relies on having an atmosphere or body of water/molecules to travel. RADAR (RAdio Detection And Ranging) would be much more effective because radio waves can actually travel through space.

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seanyseanerson t1_ixcsfrh wrote

Thank you. I was thinking of something that sent out pulses of light to read reflections in the same way sonar does but hadn't thought that radar already does the job just fine!

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