Editing Sub-orbital spaceflight (section)

===Scientific experiments===
A major use of sub-orbital vehicles today is as [[scientific]] [[sounding rocket]]s. Scientific sub-orbital flights began in the 1920s when [[Robert H. Goddard]] launched the first [[liquid fuel]]ed rockets, however they did not reach [[space]] altitude. In the late 1940s, captured German [[V-2 rocket|V-2 ballistic missiles]] were converted into [[V-2 sounding rocket]]s which helped lay the foundation for modern sounding rockets.<ref>{{Cite web|title = ch2|url = https://history.nasa.gov/SP-4401/ch2.htm|website = history.nasa.gov|access-date = 2015-11-28|url-status = live|archive-url = http://archive.wikiwix.com/cache/20151129091504/https://history.nasa.gov/SP-4401/ch2.htm|archive-date = 2015-11-29}}</ref> Today there are dozens of different sounding rockets on the market, from a variety of suppliers in various countries. Typically, researchers wish to conduct experiments in [[microgravity]] or above the atmosphere.