Whenever I read anything on hypersonic/stratospheric flight, I can't help thinking of the PanAm space plane from 2001: A Space Odyssey. https://www.space.com/3

Whenever I read anything on hypersonic/stratospheric flight, I can't help thinking of the PanAm space plane from 2001: A Space Odyssey. https://www.space.com/32258-orion-space-plane-2001-space-odyssey-photo-essay.html https://www.space.com/32258-orion-space-plane-2001-space-ody... EDITED: spelling correction.