The Search for Extra-Terrestrial Intelligence, SETI, relies on looking for signals from distant alien worlds where even very powerful signals can weaken to near nothing. We'll explore today how we, or extraterrestrials, might get around this problem, be it by immense star-powered transmitters or by using laser communication beams.

Part 2 on The Exoplanets Channel: https://youtu.be/04AIXj78nJ0
Part 3 with Parallax Nick: https://www.youtube.com/watch?v=iim--dKNUIk

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Credits:
Talkative Aliens
Science & Futurism with Isaac Arthur
Episode 249, July 30, 2020
Written, Produced, and Narrated by Isaac Arthur

Editors:
Jerry Guern
Keith Blockus

Cover Art:
Jakub Grygier https://www.artstation.com/jakub_grygier

Graphics:
Jeremy Jozwik https://www.artstation.com/zeuxis_of_losdiajana
Ken York https://www.facebook.com/YDVisual/
Mihail Yordanov
Sergio Botero https://www.artstation.com/sboterod?fref=gc

Music:
Martin Rezny, "Lifelight" https://soundcloud.com/martin-re-n-1
Aerium, "Waters of Atlantis" https://www.youtube.com/channel/UCRnUJY3l5vIJFGsY3XvW4dQ
AJ Prasad of Dark Future, "Cold Shadow" https://www.youtube.com/watch?v=xA8-7qwaEPU
Paradox Interactive, "Distant Nebula" https://www.paradoxplaza.com
Lombus, "Goldilocks Analemma" https://lombus.bandcamp.com
Ross Bugden, "City Lights" https://www.youtube.com/channel/UCQKGLOK2FqmVgVwYferltKQ

Talkative Aliens (Narration Only)

Isaac Arthur