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

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

This series takes a look at concepts for everything from Terraforming Planets and Interstellar Colonization to more down to Earth matters like Arcologies and Planet Wide Cities before examining using black holes as power sources for starships.We then leap into the far distance future at the end of time to examine civilizations surviving around black holes after all the stars have died out.
Watch the Original Video Series:
https://www.youtube.com/watch?v=TqKQ94DtS54&list=PLIIOUpOge0LufQYxcfYVqcVQOFOHFynMl

CS07 - Micro Black Holes And Hawking Radiation

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

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

This episode begins our look at solutions to the Fermi Paradox - the question of why the Universe appears empty of intelligent life besides ourselves - by looking at some of the reasons why life may simply be very uncommon. Before we can contemplate what might be special about Earth, we first need to consider what might be special about our region of space, and even our epoch of time, or our Universe itself.

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

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

Graphics Team:
Jarred Eagley
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"
AJ Prasad, "Staring Through"

Great Filters: Space & Time

We conclude our look at possible explanations why life may be very rare in the Universe by looking at the evolutionary pathway to intelligence and the hurdles between life starting on a planet and migrating off of it. 

Watch the video version: https://youtu.be/0xbSHn4Fbu4

Use my link http://www.audible.com/isaac and get a free audio book with a 30 day trial!

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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
Kris Holland of Mafic Stufios: www.maficstudios.com
Misho Yordanov
Pierre Demet
Sergio Botero: https://www.artstation.com/sboterod?fref=gc
Stefan Blandin

Script Editing:
Andy Popescu
Connor Hogan
Edward Nardella
Eustratius Graham
Gregory Leal
Jefferson Eagley
Luca de Rosa
Mark Warburton
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"
AJ Prasad,
"Staring Through"

Rare Intelligence

Could the cold outer reaches of the solar system ever be called home?
Visit our sponsor, Brilliant: https://brilliant.org/IsaacArthur/
Far beyond even Pluto and the Kuiper Belt is a vast and mostly empty region of space that we theorize may contain trillions of comets and other icy bodies. Frozen and barren though they would be, we will consider how they might one day become thriving and comfortable habitats for us.

Watch the video version: https://youtu.be/H8Bx7y0syxc

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Listen or Download the audio of this episode from Soundcloud: https://soundcloud.com/isaac-arthur-148927746/mega-earths
Cover Art by Jakub Grygier: https://www.artstation.com/artist/jakub_grygier

Graphics Team:
Edward Nardella
Jarred Eagley
Justin Dixon
Katie Byrne
Kris Holland of Mafic Stufios: www.maficstudios.com
Misho Yordanov
Pierre Demet
Sergio Botero: https://www.artstation.com/sboterod?fref=gc
Stefan Blandin

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

Colonizing The Oort Cloud (Narration Only)

An Introduction to the Fermi Paradox Great Filters series.

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Fermi Paradox: Great Filters Series Intro

The big question of why life exists has challenged minds for countless centuries, but what does science have to say on this matter? Could life arise on other worlds and in other Universes, and what is the reason for it?

Watch the video version: https://youtu.be/6z9U-tQ5RIw
Get a free month of Curiosity Stream: http://curiositystream.com/isaacarthur
Visit our Website: http://www.isaacarthur.net
Support us on Patreon: https://www.patreon.com/IsaacArthur
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SFIA Discord Server: https://discord.gg/53GAShE

Credits:
Alien Civilizations: Conspiratorial Aliens
Episode 220, Season 6 E02

Written by:
Isaac Arthur
Jerry Guern

Editors:
Darius Said
Keith Blockus
Matthew Campbell

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

Graphics by:
Jeremy Jozwik https://www.artstation.com/zeuxis_of_losdiajana
Udo Schroeter

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator