Editing Rocket (section)

===Science and research===
{{See also|Space probe}}
[[File:Bumper.jpg|thumb|upright|A [[Bumper (rocket)|Bumper]] sounding rocket]]
[[Sounding rocket]]s are commonly used to carry instruments that take readings from {{convert|50|km|mi|sp=us}} to {{convert|1500|km|mi|sp=us}} above the surface of the Earth.<ref>{{cite web |first1=Elaine|last1=Marconi |title=What is a Sounding Rocket?|url=http://www.nasa.gov/missions/research/f_sounding.html|publisher=NASA|access-date=28 May 2016|url-status=live|archive-url=https://web.archive.org/web/20160602020154/http://www.nasa.gov/missions/research/f_sounding.html|archive-date=2 June 2016}}</ref>
The [[first images of Earth from space]] were obtained from a [[V-2]] rocket in 1946 ([[V-2 No. 13|flight #13]]).<ref name="APL">{{cite journal|last=Fraser|first=Lorence|year=1985|title=High Altitude Research at the Applied Physics Laboratory in the 1940s|journal=Johns Hopkins APL Technical Digest|volume=6|issue=1|pages=92–99|url=https://www.jhuapl.edu/Content/techdigest/pdf/V06-N01/06-01-Fraser.pdf|access-date=18 October 2016}}</ref>

Rocket engines are also used to propel [[rocket sled]]s along a rail at extremely high speed. The world record for this is Mach 8.5.<ref>{{cite web |title=Test sets world land speed record |url=https://www.af.mil/News/story/storyID/123004755/ |publisher=www.af.mil |access-date=2008-03-18 |url-status=live |archive-url=https://web.archive.org/web/20130601084727/http://www.af.mil/news/story.asp?storyID=123004755 |archive-date=June 1, 2013 }}</ref>