Post #1402484

2026-04-19 02:11 UTC

It is amazing they can detect and communicate to something with such a weak signal so far away.

Replies (3)

@ripcord@lemmy.world 2026-04-19 05:41

So far away that it takes an entire day to get the signal to it. The earth to the sun is 8 minutes. And somehow we can still talk to it. It’s amazing.

Open ##1402518
@FosterMolasses@leminal.space 2026-04-19 06:17

This, coupled with the improbable idea that it could be “found” someday, has got to be one of the most exciting and magical concepts in science ever 1-2 day ETA for an interstellar telegram lol

Open ##1402522
@shortwavesurfer@lemmy.zip 2026-04-19 18:28

I was actually looking into this a little bit recently and it turns out the Voyager spacecraft launched with 23 watt radio transmitters but at the distance it takes a 72 meter dish to capture the signal and at its capture it is one attowatt. I don’t remember my system right offhand, but it’s something like a billionth of a billionth of a watt. It’s stupidly small.

Open ##1405201