Book 20, Question 45
Why Can You See So Far From a Mountaintop?
You can see so far from a mountaintop because Earth curves! If you stand low, the ground curves away and hides faraway things. The higher you are, the farther your view stretches.
More fun facts
- From the top of a mountain 1 kilometer high, the horizon is about 113 kilometers away.
- From the top of Mauna Kea in Hawaii, about 4 kilometers high, the horizon is about 226 kilometers away.
- Bending of light in the atmosphere, called refraction, can let you see even a bit farther.
- The longest line of sight ever photographed on Earth is 493.07 kilometers, or 306.37 miles, taken in Giresun, Turkey, on 15 December 2024.
- The photographer, Richard Jezik from Slovakia, had been taking pictures of faraway views since 2018.
Sources: NASA, SDSU, guinnessworldrecords.com
Questions kids ask
How far can you see from a high mountain?
From a peak 1 kilometer high, the horizon is about 113 kilometers away, and higher peaks see even farther.