Do Aliens Exist? Technosignatures, Part 1

Do aliens really exist? If so, how can we scientifically find them? This is the 3rd part of a 4 part series of videos discussing this search. In this video, we talk about the Search for Extraterrestrial INTELLIGENCE and what has been found so far. This is the search for TECHNOSIGNATURES.
Some intriguing signals have, indeed, been found. What were they? Let's have an honest look...
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Turtles All the Way Down
*******CONTENTS********
0:00 Introduction
0:59 Technosignature definition
1:22 What will not be discussed
1:57 Why search for technosignatures?
2:36 SETI history
3:41 Kinds of Radio/Microwave signals searched for
7:09 Wow! signal
8:41 How to determine if a signal is ETI
9:39 BLC1 signal
12:08 SHGb02+14a signal
12:41 HD 164595 signal
13:08 8 AI Machine-learning found signals
13:44 Fast Radio Bursts (FRBs)
14:42 FRB sources
16:42 Part 1 Summary
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Links to my 3 books on physics:
Volume 1:
"Everyone's Field Guide to Physics: Volume I: The Familiar World": www.amazon.com/Everyones-Fiel...
Volume 2:
"Everyone's Field Guide to Physics: Volume II: The Ethereal Trinity": www.amazon.com/Everyones-Fiel...
Volume 3:
"Everyone's Field Guide to Physics: Volume III: The Unfamiliar World": www.amazon.com/Everyones-Fiel...
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CREDITS:
AI machine-learning signals: www.nature.com/articles/s4155...
FRBs: www.nature.com/articles/s4155..., www.nature.com/articles/natur..., www.mdpi.com/2218-1997/8/1/9