Originally Posted by
megan
I wonder how many misses there are with weather balloons, an SR-71 crew recorded passing one in the cruise at close quarters, so about 70,000 ft or so.
Don't know, but FWIW a few years back we just missed one by maybe 100-200 feet at 747 cruise altitude somewhere over the north east united States.;we were close enough to discern the the instrumentation package.