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[[circled]] 4 [[/circled]]

[[image]] [[arrow left]] FALLEN THIS [[?]] DISTANCE, BUT EARTH HASN'T CURVED AWAY
1 [[circled]] SAME DISTANCE ABOVE GROUND
2 [[circled]] SAME "HORIZONTAL" VELOCITY

SO ... GIVE SOMETHING ENOUGH HORIZ. VELOCITY, & ... THOUGH IT'S ALWAYS FALLING ... IT STAYS "IN ORBIT" [[arrow right]] CONTINUALLY FALLING, BUT MOVING SO FAST [[strikethrough]] [[illegible]] [[/strikethrough]] (HORIZ) THAT EARTH CURVES AWAY UNDER IT [WEIGHTLESSNESS]]

SHUTTLE [[image]] 1 [[circled]] ABOVE ATMOSPHERE
                  2 [[circled]] ACCELERATE TO ~17,500 mph

[[image]] [[arrow left]] ELLIPSES, WITH CENTER of EARTH AT FOCUS
X2/A2 + Y2/B2 = [[strikethrough]] [[illegible]] [[/strikethrough]] 1

BUT REMEMBER SCALE (VERY NEARLY CIRCLES, [[arrow right]] WITH ECCENTRICITY [[?]] 0)