Lightyear Log — Space Facts

Welcome to Lightyear Log — a channel for anyone curious about space, one quick fact at a time.

Each episode answers a single space question in just a few minutes: Why is Mars red? What's actually inside a black hole? How big is the ISS, really? No fluff, no filler — just the answer, told using real footage from NASA, ESA, and other space agencies.

New episodes regularly. Subscribe and start your own log of the universe, one lightyear at a time.