How Far Can You See on the Prairies?
2025-08-01
Driving across the flat prairies can be monotonous, but the vast distance visible is captivating. With no obstructions, the horizon stretches out, and simple geometry reveals it's approximately 4.7km away. This is roughly the distance of a 5km race, making it surprisingly impressive. But are there even farther sightlines on Earth? This leads to a contemplation of Earth's curvature and the limits of human vision.
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