Why Balloons Show Flat Horizons at Every Altitude

High-altitude balloons capture something strange: no matter how high they climb — 60,000 ft, 90,000 ft, even 120,000+ ft — the horizon remains level and appears to rise to eye level.

Some say it’s lens distortion.
Others say it’s a clue many people overlook.

This video explores the observation that millions keep asking about… and why it sparks one of the biggest debates about the shape of our world.