Richard wrote:


Simply put, the unknown unknown.

I wonder if he will be supersonic at such a high altitude that being
supersonic is basically 'meaningless' (no real physical effects, shock
wave, etc).

Supersonic at 70000ft is a lot different from supersonic at 10 or 20K.


Dave

Yes it is, in terms of miles per hour.
But the shock waves, although less dense, are still there...
But is it really sky diving if you are in a capsule?
jk