60 miles per HOUR......as compared to 500 miles per SECOND.
But that begs a question. With a release of pressure, there is an accompanying cooling. Does the Sun have a cooling at the coronal hole?
Hmmm.......I was trying to make a joke, but I’d say you’ve brought up a good point. Considering the ratio of total mass vs. the thin layer of atmosphere that has less density I’d say it’s inconsequential.