by | Jun 9, 2026
Could you build a relativistic bullet? In theory, yes. In practice, the acceleration, power demand, and atmospheric effects are so absurd that your “bullet” becomes exotic gravel long before it becomes a useful weapon. A one-kilogram slug at 10% light speed carries...
by | Jun 7, 2026
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: https://go.nebula.tv/isaacarthur Watch my...
by | Jun 4, 2026
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 Watch my exclusive...
by | Jun 2, 2026
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:...
by | May 31, 2026
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 annual subscription:...
