Editing Contrail (section)

==Head-on contrails==
A contrail from an airplane flying towards the observer can appear to be generated by an object moving vertically.<ref name="NS">{{cite magazine|first=Maggie|last=McKee|title=Mystery 'missile' likely a jet contrail, says expert|date=9 November 2010|magazine=[[New Scientist]]|url=https://www.newscientist.com/article/dn19704-mystery-missile-likely-a-jet-contrail-says-expert.html|access-date=10 November 2010|archive-url=https://web.archive.org/web/20101110210639/http://www.newscientist.com/article/dn19704-mystery-missile-likely-a-jet-contrail-says-expert.html|archive-date=10 November 2010|url-status=live}}</ref><ref name=cont>{{cite web|last=West|first=Mick|title=A Problem of Perspective – New Year's Eve Contrail|date=10 November 2010|url=http://contrailscience.com/a-problem-of-perspective-in-the-oc-new-years-eve-contrail/|access-date=10 November 2010|archive-url=https://web.archive.org/web/20101112192207/http://contrailscience.com/a-problem-of-perspective-in-the-oc-new-years-eve-contrail/|archive-date=12 November 2010|url-status=live}}</ref> On 8 November 2010 in the US state of [[California]], a [[2010 California contrail incident|contrail of this type]] gained media attention as a "mystery missile" that could not be explained by U.S. military and aviation authorities,<ref>{{cite news|title=Pentagon Can't Explain "Missile" off California|date=9 November 2010|publisher=[[CBS]]|url=https://www.cbsnews.com/news/pentagon-cant-explain-missile-off-california/|access-date=10 November 2010|archive-url=https://web.archive.org/web/20101110212004/http://www.cbsnews.com/stories/2010/11/09/national/main7037857.shtml|archive-date=10 November 2010|url-status=live}}</ref> and its explanation as a contrail<ref name="NS"/><ref name=cont/><ref>{{cite web|last=Pike|first=John E.|title=Mystery Missile Madness|publisher=GlobalSecurity.org|date=November 2010|url=http://www.globalsecurity.org/org/news/2010/101110-contrail.htm|access-date=11 November 2010}}</ref><ref>{{cite web|last=Bahneman|first=Liem|title=It was US Airways flight 808|date=9 November 2010|url=http://blog.bahneman.com/content/it-was-us-airways-flight-808|access-date=10 November 2010|archive-url=https://web.archive.org/web/20101113060703/http://blog.bahneman.com/content/it-was-us-airways-flight-808|archive-date=13 November 2010|url-status=live}}</ref> took more than 24 hours to become accepted by U.S. media and military institutions.<ref>{{cite news |title=Pentagon: 'Mystery missile' was probably airplane |date=10 November 2010 |publisher=[[Mercury News]]/[[Associated Press|AP]] |url=http://www.mercurynews.com/news/ci_16574898 |access-date=11 November 2010 |archive-url=https://web.archive.org/web/20120112232749/http://www.mercurynews.com/news/ci_16574898 |archive-date=12 January 2012 |url-status=dead }}</ref>