Editing Sub-orbital spaceflight (section)

==Future of crewed sub-orbital spaceflight==
[[Private companies]] such as [[Virgin Galactic]], [[Armadillo Aerospace]] (reinvented as Exos Aerospace), [[Airbus]],<ref>{{cite news|url=https://www.bbc.co.uk/news/science-environment-27686906|title=Airbus drops model 'space jet'|first=Jonathan|last=Amos|work=BBC News|date=3 June 2014|access-date=4 May 2018|url-status=live|archive-url=https://web.archive.org/web/20180504004642/http://www.bbc.co.uk/news/science-environment-27686906|archive-date=4 May 2018}}</ref> [[Blue Origin]] and [[Masten Space Systems]] are taking an interest in sub-orbital spaceflight, due in part to ventures like the Ansari X Prize. [[National Aeronautics and Space Administration|NASA]] and others are experimenting with [[scramjet]]-based [[hypersonic]] aircraft which may well be used with flight profiles that qualify as sub-orbital spaceflight. [[Non-profit]] entities like [[ARCASPACE]] and [[Copenhagen Suborbitals]] also attempt [[rocket]]-based launches.