Episode 5 of the Habitable Planets Series takes a look at double planets and what sort of conditions would prevail, or need to prevail, for them to be Earth-like. As well as the Rocheworld, a special case of Double Planets where the two planets either share an atmosphere or have even begun to merge together.

Orbital Period Calculator:
http://www.calctool.org/CALC/phys/astronomy/planet_orbit
Note: make sure to set units of both bodies to Earth Mass and period to hours or days if trying to look at double planet cases.

HP05 - Double Planets And Rocheworlds

By contemplating the idea of what true Kardashev 2 and 3 civilizations might look like, in the context of Megastructures, we re-assess the Fermi Paradox and come up with a new question, no longer "Why can't we see any alien civilizations?" but why we can see any stars in the night sky at all.

FP02 - Dyson Dilemma

This series takes a look at the Fermi Paradox, also known as the Great Silence, the seeming impossibility of having a Universe so vast and ancient that apparently has no other intelligent life in it but us.

FP01 - Fermi Paradox Compendium

An in-depth survey of the various technologies for spaceship propulsion, both from those we can expect to see in a few years and those at the edge of theoretical science. We'll break them down to basics and familiarize ourselves with the concepts.
Note: I made a rather large math error about the Force per Power the EmDrive exerts at 32:10, initial tentative results for thrust are a good deal higher than I calculated compared to a flashlight
Watch the video version:
https://youtu.be/wXiitWK_6Qg

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

Music by:
Dexter Britain
"Seeing the Future"
Frank Dorittke
"Morninglight"
Dexter Britain
"After The Week I've Had"
Chris Zabriskie
“Mario Bava sleeps in a little later than he expected to”
Kvazar
"Koalips"
Kai Engel
"Snowfall"
Kevin MacLeod
“Spacial Winds”
Phase Shift
“Forest Night”
Brandon Liew
"Into the Storm"

The Spaceship Propulsion Compendium

This episode focuses on the basic concepts and misconceptions of wars fought in space and examines the notions of weapons, defenses, stealth in space, and the distance involved.

Watch the Video Version:
https://youtu.be/xvs_f5MwT04

Project Rho: http://www.projectrho.com/public_html/rocket/index.php
Military Science Fiction: http://www.milsf.com

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

Music By:
Dexter Britain
"Seeing the Future"
Kai Engel
“Endless Story about Sun and Moon”  
Koalips
“Kvazar”  
Frank Dorittke
“Morninglight”  
Chris Zabriskie
“Mario Bava sleeps in a little later than he expected to”  
Kevin MacLeod
"Spacial Winds"
Brandow Liew 
“Into the Storm”

Space Warfare

This episode begins a three-part series focusing more on the specifics of colonization including human aspect of it. We lay the groundwork by looking at colonies just in our solar system before moving off in episodes two and three to look at life on colony ships and then on interstellar colonies.

Watch the video: https://youtu.be/VIMV6E8OxG8

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

Music by:
Dexter Britain
“Seeing the Future”
Kai Engel
“Endless Story about Sun and Moon”
Koalips
“Kvazar”
Kai Engel
“December”
Martin Rezny
“Tempus Fugit”
Chris Zabriskie
“Mario Bava sleeps in a little later than he expected to”
Frank Dorittke
“Morninglight”
Phase Shift
“Forest Night”
Kevin MacLeod
“Spacial Winds”
Brandow Liew
“Into the Storm”

Life In A Space Colony Episode 1

We continue our look at hypothetical alien civilizations by discussing the various possible circumstances in which we might first contact them or be contacted by them. 

Watch the video: https://youtu.be/igZi4iyJiq0

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

Music by:
Intro/Outro:
Martin Rezny
"Lifelight"
Alessandro 'Aleks' Fadini
"First Contact"
Kai Engel
"December"
Frank Dorittke
“Morninglight”
Kai Engel
“Endless Story about Sun and Moon”
Koalips
“Kvazar”
Chris Zabriskie
“Mario Bava sleeps in a little later than he expected to”
Kevin MacLeod
“Spacial Winds”
Phase Shift
"Forest Night"

First Contact

In this episode we continue our look at possible Alien Civilizations by attempting to peer into the alien psyche. In the absence of any actual ones to examine we will review fictional examples and try to match those up against both human behavior and what we might consider likely, unlikely, or impossible to arise from evolutionary processes.

Watch the video version: https://youtu.be/IVIzcMF2Kc4

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

Music by:
Martin Rezny
"Lifelight"
Alessandro 'Aleks' Fadini
"First Contact"
Kai Engel
“Endless Story about Sun and Moon”
Frank Dorittke
“Morninglight”
Chris Zabriskie
“Mario Bava sleeps in a little later than he expected to”
Kevin MacLeod
“Spacial Winds”

Crazy Aliens

This episode discusses the idea over using chains of relays firing immensely powerful lasers or streams of particles to move spaceships between neighboring stars at near-light velocities.

Watch the video: https://youtu.be/oDR4AHYRmlk

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

Music by:
Dexter Britain
"Seeing the Future"
Kai Engel
"December"
Lombus
"Hydrogen Sonata"
Koalips
"Kvazar"
Frank Dorittke
"Morninglight"
Kai Engel
"Endless Story about Sun and Moon"
Brandon Liew
"Into the Storm"

Interstellar Highways

We continue our look at possible explanations why life may be very rare in the Universe by examining our planet itself, and looking at which of its characteristic might be important to intelligence developing and how improbable those traits are for a given planet in a given solar system.

Watch the video version: https://youtu.be/oIva_60l3ww

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Support the Channel on Patreon: https://www.patreon.com/IsaacArthur
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Cover Art by Jakub Grygier: https://www.artstation.com/artist/jakub_grygier

Graphics Team:
Edward Nardella
Jarred Eagley
Justin Dixon
Katie Byrne
Misho Yordanov
Murat Mamkegh
Pierre Demet
Sergio Botero
Stefan Blandin

Script Editing:
Andy Popescu
Connor Hogan
Edward Nardella
Eustratius Graham
Gregory Leal
Jefferson Eagley
Luca de Rosa
Michael Gusevsky
Mitch Armstrong
MolbOrg
Naomi Kern
Philip Baldock
Sigmund Kopperud
Steve Cardon
Tiffany Penner

Music:
Lombus, "Cosmic Soup"
Markus Junnikkala, "A Memory of Earth"
AJ Prasad, "Aether"
Lombus, "Hydrogen Sonata"
Dan McLeod, NeptuneUK, "Mysterious Universe"
Kevin MacLeod, "Spacial Winds"

Fermi Paradox Great Filters: Rare Earth

The Fermi Paradox, the big question of where all the aliens are, has many proposed solutions focusing on what might lower the odds of intelligent species arising on another world, or what might end technological civilizations or cause them to go unseen by us and our SETI efforts. But what if intelligence rarely leads to technological civilizations in the first place? Could there be countless planets in our galaxy occupied by species who never came to value technology?

Watch the video version: https://youtu.be/XcrrW1GgHso
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Credits:
The Fermi Paradox Great Filters: Rare Technology
Episode 210, Season 5 E44

Written by:
Isaac Arthur

Editors:
Darius Said
Keith Blockus

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

Graphics by:
Jeremy Jozwik https://www.artstation.com/zeuxis_of_losdiajana
Ken York https://www.facebook.com/YDVisual/
LegionTech Studios https://hades9.com

Produced & Narrated by:
Isaac Arthur

Music:
Lombus, "Cosmic Soup" https://lombus.bandcamp.com
Markus Junnikkala, "A Memory of Earth" https://www.markusjunnikkala.com/
AJ Prasad, "Aether" https://www.youtube.com/watch?v=xA8-7qwaEPU
Lombus, "Hydrogen Sonata" https://lombus.bandcamp.com
AJ Prasad, "Staring Through" https://www.youtube.com/watch?v=xA8-7qwaEPU