this post was submitted on 12 Oct 2024
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Science Memes

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[–] [email protected] 21 points 2 months ago (4 children)

Don’t forget the inverse square law. Even without a change in medium or any obstacles, the strength of the signal decrease over distance until it is undetectable.

This is also why there are no extraterrestrial civilizations hearing any radio broadcasts from Earth. Our transmitters are so weak that any signals we send out fade into the CMB before they get any real distance.

[–] [email protected] 12 points 2 months ago* (last edited 2 months ago) (2 children)

So Lrrr and Ndnd warching Single Female Lawyer 1000 years in the future is a lie?

[–] [email protected] 5 points 2 months ago

They would not have been able to watch it from an original OTA broadcast, no.

[–] [email protected] 3 points 2 months ago (1 children)

Unless they have an extensive network of wormhole repeateds

[–] [email protected] 2 points 2 months ago

They've probably just got a spy satellite around earth that transmits back. Or maybe an extremely directional antenna / receiver dish would work, since they're focused on Earth specifically.

[–] [email protected] 9 points 2 months ago (1 children)

You area conflating auditory waves with radio waves.

These are very much not the same thing. Sound waves require a medium while radio waves do not.

Radio waves travel vast distances through space while sound doesn't travel at all.

[–] [email protected] 6 points 2 months ago

If they didn't fade with distance, this is as far as they have gotten. So for now we are still quiet in the dark forest.

[–] [email protected] 4 points 2 months ago

If we had FTL I'd be a radio archaeologist, flying out to various distances to attempt to capture lost episodes of old TV shows like Doctor Who