you can't see the curve in the video. he spends 15 minutes explaining to you why he thinks what he thinks is a curve. he didn't send up a balloon either.
here are high altitude pictures
can't find one with a curve that is not also a fish-eye lens
you can't see the curve in the video. he spends 15 minutes explaining to you why he thinks what he thinks is a curve. he didn't send up a balloon either.
here are high altitude pictures
can't find one with a curve that is not also a fish-eye lens