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Or skip to minute 21 where it has this:
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From 1000 km up (about 620 miles), where Earth is 120 degrees across in your field of view, you can just start to see Earth as a complete disc right in front of you at once. However, only 7% of Earth fits within the horizon from that altitude. Images of Earth taken by satellites this far up, like the Suomi NPP, look kind of weird. North America doesn't actually take up this much (image at 21:47) of the globe. Earth's 120-degree width has been compressed (by the fact of altitude and its effect on perspective view) to fit in an image much narrower..Vsauce uses an unfortunate choice of words here. This "compression" to which he refers is not an artificial or "CGI" application of fake distortion, but rather it is a direct result of a 120-degree view being visible on a computer screen, or any flat screen or panel (such as a billboard or a drive-in movie screen or an I-Max screen). 120 degrees leaves only 30 degrees on the left, right, top and bottom, short of 180 degrees.
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In other words, it's not a falsification of reality but
an honest attempt to render for view on your screen exactly what you would see if you were there looking at Earth from 1000 km altitude..
If you know anything about photography, in order to get a 120-degree field of view in one photograph you need to use a wide angle lens, because a normal lens has less field of view. A wide field of view starts around 84 degrees and increases from there. But we want 120 degrees to cover this view from 1000 km altitude. That's 36 degrees greater than 84 degrees, so it's a really wide angle.
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As it was shown a few minutes before, 120 degrees is about the limit of your natural visual field of view up and down. Without obstructions (such as cheek bones, eyebrows, glasses) you can only see a maximum of 120 degrees up and down. Therefore, from 1000 km altitude (such as the Suomi NPP satellite), the full field of view encompassing the visible Earth from that height would entirely fill your visual field from top (eyebrows) to bottom (cheek bones). The only reason you would be able to see empty black space (provided the sun isn't there!) to the right and to the left is because you have TWO EYES and they are side-by-side. Vsauce doesn't mention this detail.
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In short, if you were there at 1000 km altitude looking at Earth, you would have to turn your head right and left, up and down, to see the edges of the horizon comfortably. If you were to face Earth without turning your head, your eyes could just barely see the horizon of Earth at the top and at the bottom and beyond that you would not see any black, empty space. The Earth's horizon would touch the limits of your vision up and down. From right to left there would be a small amount of black, empty space beyond the horizon of Earth in your peripheral vision, but you would not be able to turn your eyes far enough to directly look at it. You would have to turn your head to see it clearly.