What Would Happen If a Comet Hit Earth?

What Would Happen If a Comet Hit Earth?

by | Feb 3, 2026

What if a comet hit Earth? Faster than asteroids and packed with primordial chemistry, a single impact could cause mass extinction—or help seed life itself. 🚀 Join this channel to get access to perks: https://www.youtube.com/channel/UCZFipeZtQM5CKUjx6grh54g/join 🛒...
Plasma Based Lifeforms – Could Creatures of Fire and Lightning Exist?

Plasma Based Lifeforms – Could Creatures of Fire and Lightning Exist?

by | Feb 1, 2026

Could life exist as plasma or lightning? Explore plasma-based aliens, fire creatures, and exotic physics beyond chemistry. Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Watch my exclusive video The Future of Interstellar...
Does Humanity Need To Be Unified To Survive and Settle Space?

Does Humanity Need To Be Unified To Survive and Settle Space?

by | Jan 29, 2026

Must humanity unite to colonize space, or can rivalry and diversity be our greatest strengths among the stars? Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur Check out Mad Kings: https://nebula.tv/madkings?ref=isaacarthur...
Why Aliens Can’t Build Rockets – The Oxygen Bottleneck

Why Aliens Can’t Build Rockets – The Oxygen Bottleneck

by | Jan 27, 2026

Why some alien civilizations may never reach space 🚀 Without enough oxygen, fire fails—and without fire, industry, rockets, and stars remain forever out of reach. 🚀 Join this channel to get access to perks: https://www.youtube.com/channel/UCZFipeZtQM5CKUjx6grh54g/join...