Editing Spaceflight (section)

=== Interstellar ===
{{Main|Interstellar travel}}

''[[New Horizons]]'' is the fifth spacecraft put on an escape trajectory leaving the [[Solar System]]. ''Voyager 1'', ''Voyager 2'', ''Pioneer 10'', ''Pioneer 11'' are the earlier ones. The one farthest from the Sun is ''[[Voyager 1]]'', which is more than 100 [[Astronomical unit|AU]] distant and is moving at 3.6 AU per year.<ref>{{cite web|url=http://www.heavens-above.com/solar-escape.asp
 |title=Spacecraft escaping the Solar System
 |publisher=Heavens-Above GmbH
 |url-status=dead  |archive-url=https://web.archive.org/web/20070427184732/http://www.heavens-above.com/solar-escape.asp |archive-date=April 27, 2007 }}</ref> In comparison, [[Proxima Centauri]], the closest star other than the Sun, is 267,000 AU distant. It will take ''Voyager 1'' over 74,000 years to reach this distance.<!-- This still borders on original research, but is at least consistent with cited sources. --> Vehicle designs using other techniques, such as [[nuclear pulse propulsion]] are likely to be able to reach the nearest star significantly faster. Another possibility that could allow for human interstellar spaceflight is to make use of [[time dilation]], as this would make it possible for passengers in a fast-moving vehicle to travel further into the future while aging very little, in that their great speed slows down the rate of passage of on-board time. However, attaining such high speeds would still require the use of some new, advanced method of [[Spacecraft propulsion|propulsion]]. [[Dynamic soaring]] as a way to travel across interstellar space has been proposed as well.<ref name="SA-20221206">{{cite news |last=Mcrae |first=Mike |title='Dynamic Soaring' Trick Could Speed Spacecraft Across Interstellar Space |url=https://www.sciencealert.com/dynamic-soaring-trick-could-speed-spacecraft-across-interstellar-space |date=6 December 2022 |work=[[ScienceAlert]] |accessdate=6 December 2022 }}</ref><ref name="FST-20221128">{{cite journal |last1=Larrouturou |first1=Mathias N. |last2=Higgns |first2=Andrew J. |last3=Greason |first3=Jeffrey K. |title=Dynamic soaring as a means to exceed the solar wind speed |date=28 November 2022 |journal=  Frontiers in Space Technologies|volume=3 |doi=10.3389/frspt.2022.1017442 |arxiv=2211.14643 |bibcode=2022FrST....317442L |doi-access=free }}</ref>