The Horizontal Horizon

First published at 14:37 UTC on January 3rd, 2019.
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Whether at sea-level, the top of Mount Everest, or flying over a hundred thousand feet in the air, the always horizontal horizon line always rises up to meet the eye-level of the observer and remains perfectly flat. You can test for yourself on a be…

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CategoryEducation
SensitivityNormal - Content that is suitable for ages 16 and over
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