An advanced simulator shows what the curvature should look like at 400 km, reality shows otherwise.

Great Debates
1

The curvature we see in this video is based on mathematical calculations of the ‘angular declination of the horizon’.
Reality shows otherwise:

http://chamorrobible.org/images/photos/gpw-20061021-NASA-ISS022-E-062673-colorful-horizon-of-Earth-and-silhouette-of-Space-Shuttle-Endeavour-STS-130-20100209-other.jpg

The live feed of ISS that was started recently shows the view from 4 cameras. All are pointing down to Earth. Why ? Because if they were looking straight ahead there would be no curvature, the horizon would be flat.

http://www.spaceflight101.com/uploads/6/4/0/6/6406961/_8414937_orig.jpg

The camera showing the aft view has a typical lens (not a fisheye) but it also creates the ‘curvature’. You can compare the convexity gained with a fisheye lens and a normal lens as they are next to each other on the above scheme and photo.

Here is a view from a camera attached to a balloon which doesn’t have a fisheye lens. Yet, it also causes the horizon to bend a little.

See also:

http://www.reddit.com/r/conspiracy/comments/24xhfo/its_the_fisheye_lens_that_proves_that_the_horizon/

2

Okay, I’ll take the ‘con’ side.

Nope.

3

Enough.

karol, both Tom and I said you need to stop this. Your posting privileges are now under review and may be revoked at any time. Do not start another thread like this anywhere on the SDMB.

4

Okie dokie sir.