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r/IsaacArthur

26,947 subscribers
The official Subreddit for the Isaac Arthur YouTube channel. This Sub focuses on discussing his videos and exploring concepts in science with an emphasis on futurism, space exploration, along with a healthy dose of science fiction.

Notice: This subreddit is not actively monitored, so the posts here are only a small subset of what exists on reddit.

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Sci-Fi / Speculation Transhuman/Posthuman Hard Science Art & Memes Uploaded Mind/AI META moderator The Man Himself FTL Optimist Administration First Rule Of Warfare Megastructure Janitor Habitat Inhabitant Paperclip Enthusiast Quantum Cheeseburger Planet Loyalist Traveler
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to r/IsaacArthur by SimonDLaird
1 day ago
Atmosphere for O'Neill Cylinder
to r/IsaacArthur by JustAvi2000
2 days ago
Interesting take on "terraform vs. build orbital habs" argument
to r/IsaacArthur by donkeyraft
2 days ago
What can you actually do with energy hyperabundance
to r/IsaacArthur by SunderedValley
6 days ago
Alternative terminology for talking about post scarcity
to r/IsaacArthur by AethericEye
1 week ago
BSG-style dogfights really really don't make sense in a realistic setting.
Hard Science
to r/IsaacArthur by IsaacArthur
1 week ago
Preview thumbnail for Aliens Have Contacted Us... Now What? image
Aliens Have Contacted Us... Now What?
to r/IsaacArthur by Rashkavar
1 week ago
Space farms and artificial light sources
to r/IsaacArthur by LonelyWizardDead
2 weeks ago
Manufacturing in space
to r/IsaacArthur by SunderedValley
2 weeks ago
What's new in the world of direct energy conversion?
to r/IsaacArthur by FireTheLaserBeam
2 weeks ago
No FTL radio and consequences/repurcussions/logical implications because of this idea
to r/IsaacArthur by GasProfessional1841
2 weeks ago
Preview thumbnail for Possible Types of Fungal Government(?) image
Possible Types of Fungal Government(?)
Sci-Fi / Speculation
to r/IsaacArthur by MiamisLastCapitalist
2 weeks ago
Preview thumbnail for Kinetic Weapons VS Energy Weapons - Which is Better? By Spacedock image
Kinetic Weapons VS Energy Weapons - Which is Better? By Spacedock
to r/IsaacArthur by LeoDave86
2 weeks ago
Colonies and cargo shipments question.
Hard Science
to r/IsaacArthur by SunderedValley
3 weeks ago
Preview thumbnail for Farming in the Dark: How Electro-Agriculture Outpaces Photosynthesis image
Farming in the Dark: How Electro-Agriculture Outpaces Photosynthesis
to r/IsaacArthur by MiamisLastCapitalist
3 weeks ago
Megathread of good space/futurism channels
to r/IsaacArthur by IsaacArthur
3 weeks ago
Preview thumbnail for Early Terraforming: The First Steps in Planetary Transformation image
Early Terraforming: The First Steps in Planetary Transformation
to r/IsaacArthur by IsaacArthur
3 weeks ago
Preview thumbnail for Ghost Armadas & Primordial Galactic Wars image
Ghost Armadas & Primordial Galactic Wars
to r/IsaacArthur by Cooked-_-Ewok
3 weeks ago
Railguns, Helical Railguns, coilguns and their variations. Which would be used?
to r/IsaacArthur by Diligent-Good7561
4 weeks ago
What would a luxury item be in space?
Hard Science
to r/IsaacArthur by Heavy_Carpenter3824
4 weeks ago
Should we move to a PAM like currency?
to r/IsaacArthur by InfinityScientist
4 weeks ago
Do you believe in the existence of the so-called Universal limit to technological development (ULTD)?
Hard Science
to r/IsaacArthur by MiamisLastCapitalist
1 month ago
Preview thumbnail for Boeing-made communications satellite breaks up in space image
Boeing-made communications satellite breaks up in space
to r/IsaacArthur by MrWilsonLor
1 month ago
Galactic-scale industry and a "small" population
to r/IsaacArthur by kiteret
1 month ago
Is there actual first-principles argument why future buildings could not have lots of stone in their lower vertical parts due to it being the cheapest? How can we know that stone cutting and handling tech can not advance so much that stone blocks would be cheaper than concrete in many places again?
Hard Science
to r/IsaacArthur by Strong-Mention1608
1 month ago
Why do most sci-fi make space 2d instead of 3d?