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

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

Starlifting is the process of removing matter from stars, and in this episode we will look at how you would do this and why you would do this. We will see there are a lot of reasons, and that the methods are not very high tech at all.

Watch the Video version: https://youtu.be/pzuHxL5FD5U
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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"
Kai Engel
"Snowfall"
Kevin MacLeod
“Spacial Winds”
Phase Shift
“Forest Night”
Brandon Liew
"Into the Storm"

Starlifting

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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Listen or Download the audio of this episode from Soundcloud: https://soundcloud.com/isaac-arthur-148927746/space-warfare
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

This episode  is the second of a three-part series focusing more on the specifics of colonization including human aspect of it. Having laid the groundwork last time, we now ask ourselves what the ships carrying people to new worlds would be like, and what life aboard them would be like.  

Watch the episode: https://youtu.be/THqtAQOicQI

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Visit the sub-reddit: https://www.reddit.com/r/IsaacArthur/
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”
Frank Dorittke
“Morninglight”
Phase Shift
“Forest Night”
Kevin MacLeod
“Spacial Winds”
Brandow Liew
“Into the Storm”

Life In A Space Colony Episode 2

This episode concludes a three-part series focusing more on the specifics of colonization including human aspect of it. Today we journey to the Tau Ceti System after a 120 year voyage to join our colonists in the early days of the colony.

Watch the video:
https://youtu.be/6VBCxWcAPXw

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Support the Channel on Patreon: https://www.patreon.com/IsaacArthur
Visit the sub-reddit: https://www.reddit.com/r/IsaacArthur/
Listen or Download the audio of this episode from Soundcloud: 
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”
Frank Dorittke
“Morninglight”
Phase Shift
“Forest Night”
Kevin MacLeod
“Spacial Winds”
Brandow Liew
“Into the Storm”

Life In A Space Colony Episode 3

This episode focuses on many of the problems with travel between stars at relativistic velocities, like collision avoidance, radiation, ship geometry, armor, and point-defense. 

We will also look at some of the possible engine types and discuss realistic maximum speeds they offer.

Watch the Episode: https://youtu.be/s6BQSgidbmc

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Visit the sub-reddit: https://www.reddit.com/r/IsaacArthur/
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", and Kevin MacLeod "Spacial Winds"

Interstellar Travel Challenges

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

Visit our Website: http://www.isaacarthur.net
Join the Facebook Group: https://www.facebook.com/groups/1583992725237264/
Support the Channel on Patreon: https://www.patreon.com/IsaacArthur
Visit the sub-reddit: https://www.reddit.com/r/IsaacArthur/
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

To see deeper into space, we will need much bigger telescopes.
As astronomy seeks to find and study distant planets and peer further and more accurately into space and time, the limitations of ground based telescopes, especially optical telescopes, represents our largest barrier. Today we will examine what those limitations are, and ways to make vastly more enormous telescopes and arrays

Watch the video version: https://youtu.be/ciECLSCgTKY
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Listen or Download the audio of this episode from Soundcloud: Episode's Audio-only version: 
https://soundcloud.com/isaac-arthur-148927746/megatelescopes
Episode's Narration-only version: https://soundcloud.com/isaac-arthur-148927746/megatelescopes-narration-only
Credits:
Megatelescopes Season 4, Episode 19  Writers: Isaac Arthur Mark Warburton  Editors: Darius Said Jerry Guern Keith Blockus  Producer: Isaac Arthur  Cover Artist:
Jakub Grygier https://www.artstation.com/artist/jakub_grygier  
Graphics Team: Jarred Eagley Jeremy Jozwik Justin Dixon Katie Byrne Luca DeRosa Mihail Yordanov Sam McNamara (Rapid Thrash) Sergio Botero https://www.artstation.com/sboterod?fref=gc  
Narrator: Isaac Arthur  Music Manager: Luca De Rosa  Music:  Stellardrone, "Billions And Billions" https://stellardrone.bandcamp.com  Aerium, “Waters of Atlantis" https://www.youtube.com/channel/UCRnUJY3l5vIJFGsY3XvW4dQ  Lombus, “Time Slip" https://soundcloud.com/lombusmusic  Markus Junnikkala, "A Memory Of Earth" https://www.markusjunnikkala.com/ 
Stellardrone, "Light Years" https://stellardrone.bandcamp.com