How are we searching for Extra Terrestrial messages ?

We been searching for intelligent life outside out planet for over 100 years and yet we still haven't found anything that provides solid proof that is out there. So in this video we look at how we are seaching to find E.T.

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Written, Researched and Presented by Paul Shillito

Images and footage : BerkeleySETI, NASA, ESO, ESA, VLA, Ohio State University,
andys-arcade, Astro-Physics Community

And as always a big thank you also goes out to all our Patreons :-)

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Drifting at 432hz by Unicorn Heads

[Cenotaur]

An idea for a future episode: what would happen if a verified signal was received?

[campsitesweden]

I rarely subscribe to new channels I find, but this is one of the unusal ones. I have never come upon someone explaining complex matters in such a down to earth way. Clear, understandable. Keep it up!

[InconsistentManner]

15:17 you mentioned Arecibo "up and running again" Do you know something that the rest of us don't know? Did the NSF quietly say they are repairing or rebuilding?

As far as I'm aware, 1420 MHz was chosen because it would be a sensible thing to be looking for (there's a lot of hydrogen in space), but there's also not much in the way of noise on that wavelength which makes it easier to detect. Those signals still aren't going to make it very far before they lose enough energy to just look like noise. We don't have the transmission power to reach very far in general (comically speaking).

[laurel]

Really enjoying the humorous remarks. Awesome video as always

[dcw]

It's amazing that even though I have little interest in the subject of SOME (few) of your videos, I have yet to find one that did not hold my attention and sometimes even captivate me. You are such a good researcher and spokesman for your channel! Well done, Paul.

[MicahTischler]

I may be mistaken, but I thought NSF had said, very clearly, that Arecibo was NOT coming back. :(

[MatSpeedle]

A fantastic overview Paul, thank you! I agree with your final sentiment about looking for intelligent life on earth first... Sometimes you have to wonder.

[ken]

One problem with all of this is that if a species advanced their technology so they no longer use radio then we’d never detect them. That is a distinct possibility.

[carldori]

Thank you Paul, as always content that is interesting, informative and well presented.

[dziban]

I thought Arecibo was beyond a doubt retired? NSF said no to repairs, didn't they? Edit: yes, in October 2022 NSF categorically ruled it out.

[NLShArKNL]

Always gives me a smile when I see one of your videos in my sub box, keep up the good work! <3

[djpalmer]

Great video. Paul's last comment reminded me of these lyrics from Monty Python's Galaxy Song "And pray that there's intelligent life somewhere up in space
'Cause there's bugger-all down here on Earth"!

[gaming_henry]

Whilst our signals may have reached the nearest 1000 stars, but the signal to noise ratio makes detection really limited for detecting radio leakage.
Only strong directed repeated signals could be realistically detected

[beeftec]

Always have great video subjects Paul, at top quality. Thank you.

[jfgenie]

15:45 - Best end of video punch line ever! Love it!

[Nickle]

The big issue is the one over r squared issue. The more advanced, the more trasmitters. Equally, the better the amplification so the less power that is needed. I suspect they are just too far away.

[satyris]

Congrats on 1million subscribers. Easily one of the best researched, written, and presented YouTube channels

[rhelyk]

"or the Arecibo telescope when it's up and running again"

Wait, is Arecibo being rebuilt? Last news I heard was that it wouldn't be, and a quick google search confirms as of October 2022, did this change again?

[wizzardofpaws]

As usual and as expected, a very brilliant video documentary from the Curious Droid