On Wednesday, April 13, 2022 at 9:49:13 PM UTC-6, RichA wrote:
https://phys.org/news/2022-04-space-balloon-company-luxury-cabins.html
A large hydrogen balloon lifts a cabin 20 miles up, where the Earth's
curvature is visible; although this is not considered to be officially
in "space", it's still pitched as a form of space tourism.
This is all very well, but if balloons can lift heavy payloads to 20 miles up, this has a practical application: lifting a rocket that high, before ignition, could result in a fuel savings.
John Savard
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