Editing Interstellar travel (section)

==== Generation ships ====
{{Main|Generation ship}}
A [[generation ship]] (or '''world ship''') is a type of [[interstellar ark]] in which the crew that arrives at the destination is descended from those who started the journey. Generation ships are not currently feasible because of the difficulty of constructing a ship of the enormous required scale and the great biological and sociological problems that life aboard such a ship raises.<!---So? nothing else in this article is, either---><ref>{{cite journal|last=Hein|first=A. M.|display-authors=etal|title=World Ships: Architectures & Feasibility Revisited|journal=Journal of the British Interplanetary Society|date=2012|volume=65|pages=119–133|url=https://www.academia.edu/2111006|bibcode=2012JBIS...65..119H|access-date=1 November 2017|archive-date=16 December 2021|archive-url=https://web.archive.org/web/20211216042335/https://www.academia.edu/2111006|url-status=live}}</ref><ref name="Hein 2020 75–104">{{cite journal|last=Hein|first=A.M.|author2=Smith, C.|author3=Marin, F.|author4=Staats, K.|title=World Ships: Feasibility and Rationale|journal=Acta Futura|date=2020|volume=12|pages=75–104|doi=10.5281/zenodo.3747333|arxiv=2005.04100|s2cid=218571111|url=https://zenodo.org/record/3747333|access-date=1 June 2020|archive-date=16 May 2021|archive-url=https://web.archive.org/web/20210516224552/https://zenodo.org/record/3747333|url-status=live}}</ref><ref>{{cite journal|last=Bond|first=A.|author2=Martin, A.R.|title=World Ships – An Assessment of the Engineering Feasibility|journal=Journal of the British Interplanetary Society|date=1984|volume=37|pages=254–266|bibcode = 1984JBIS...37..254B }}</ref><ref>{{cite book|last=Frisbee|first=R.H.|title=Limits of Interstellar Flight Technology in Frontiers of Propulsion Science|date=2009|publisher=Progress in Astronautics and Aeronautics}}</ref><ref>{{cite web |last=Hein |first=Andreas M. |title=Project Hyperion: The Hollow Asteroid Starship – Dissemination of an Idea |url=http://www.icarusinterstellar.org/project-hyperion-the-hollow-asteroid-starship-dissemination-of-an-idea/ |url-status=dead |archive-url=https://web.archive.org/web/20130410004948/http://www.icarusinterstellar.org/project-hyperion-the-hollow-asteroid-starship-dissemination-of-an-idea/ |archive-date=10 April 2013 |access-date=12 April 2013 |website=Icarus Interstellar}}</ref>