Are Relativistic Weapons Realistic?
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The Moon Base: Shackleton Crater vs Other Sites
Where should humanity build its first Moon base: Shackleton Crater, lava tubes, lunar maria, or the far side? The Moon’s future may be a network, not one base. Get Nebula using my link for 50% off an annual subscription:...
Merging with Alien Civilizations – Our Future in a Galactic Community
First contact is easy. Living together isn’t. How would humanity merge with alien civilizations in a shared galaxy of trade, politics, and uneasy peace? Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur...
How Many Habitable Planets Are In The Milky Way?
Are habitable planets rare cosmic jewels, or scattered across the galaxy by the billions? We explore what “habitable” really means, from Earthlike worlds to planets we might someday transform. 🚀 Join this channel to get access to perks:...
Antimatter Propulsion
Antimatter propulsion could be the fastest engine ever built. We explore how antimatter rockets work, their extreme energy density, and whether they could power humanity’s first true interstellar spacecraft. Get Nebula using my link for 50% off an...
The Von Braun Wheel – Building Humanity’s First Rotating Space Station
Before NASA, we had a plan for a rotating space station. The Von Braun Wheel could be humanity’s first step toward artificial gravity, orbital habitats, and permanent life beyond Earth. Get Nebula using my link for 50% off an annual subscription:...
How Far Away Could Aliens Hear Earth?
Earth leaks radio signals constantly, but could aliens actually hear us from another star? The answer matters for SETI, the Fermi Paradox, and the search for civilizations like our own. 🚀 Join this channel to get access to perks:...
The Zoo Hypothesis and the Fermi Paradox… Are We Being Watched?
Are aliens watching us? The Zoo Hypothesis suggests advanced civilizations may be hiding, enforcing a galactic quarantine, or masking reality itself. Explore the Fermi Paradox, Dyson dilemma, and the unsettling possibility we are not alone—but...
Don’t Panic: A Guide to Artificial Intelligence
Artificial intelligence is changing the world, but not quite the way headlines suggest. Here’s a calmer look at AI’s risks, limits, and real potential. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur...
The First Interplanetary War: Tactics in the Solar System
In space, everything is a weapon. From orbits to infrastructure, here’s how the first real war between worlds might actually be fought. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive...