Horizon always rises to eye level

No matter how high you go in the sky — whether it is in an airplane or in a high-altitude hot-air balloon — the horizon (where the ground meets the sky) will always rise to your eye-level. This is a proof that the earth is flat plane. How far does the plane extend? No one knows.

If the Earth was a sphere, then the higher you go in altitude, the more you would have to look down in order to see the horizon. But as it is in reality, when we go higher we do not have to look down — the horizon always stays in the same position relative to us.


4 thoughts on “Horizon always rises to eye level

  1. On a recent flight to Barcelona, my first flight in an aircraft since looking into this subject, i noted the horizon out of my window rising to eye level. When we eventually reached cruising altitude, about 25,000 ft, the horizon was still at eye level. I looked across and out of a window on the opppsite side of the plane and noted the horizon on that side also at eye level. At this altitude the distance from horizon to horizon must be in the hundreds of miles. I could not see any curvature.

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  2. I’m not a flat earther. I only just discovered that there still was such a thing. But I’m BAFFLED by what you guys are trying to say with this “proof.” What does it even mean, the horizon “rises” to eye level? I completely don’t understand what you’re trying to say. You look at the horizon, and your head tilts to wherever the horizon is. How does it “rise” to eye level? I lived in Las Vegas, surrounded by mountains. The horizon there is different than it is in Ohio. But in neither place would I call it “eye level.”


    • Thanks for your comment. The horizon actually does rise to the observer’s eye level, but we are talking about the TRUE or PERFECT horizon, which is the point (or line) at which the ground appears to rise up and appears to touch the sky which appears to be coming down. Obviously the ground is not REALLY touching the sky, but the “horizon” gives the observer that illusion because of the laws of perspective and how the human eye works. This is not discounting natural features of land, such as hills, mountains, valleys, etc. Naturally if you are right at the base of a mountain, you will need to look up to see the top of the mountain, but that is not the horizon. If you go up in an airplane, no matter how high you go, the distant horizon that you see (which is no longer affected by mountains and such because you are so high up) is always at eye level all 360 degrees around the observer. If the Earth were a ball, the observer would have to at some point begin looking down in order to look at the horizon… but this never happens… it is always at eye level.


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