Welcome to Wikipedia. I notice that you added some content to Space Shuttle Columbia disaster that appears to be a minority or fringe viewpoint. Unfortunately, this edit appears to give undue weight to this minority viewpoint, and has been reverted. To maintain a neutral point of view, an idea that is not broadly supported by scholarship in its field must not be given undue weight in an article about a mainstream idea. Feel free to use the article's talk page to discuss this, and take a look at the welcome page to learn more about contributing to this encyclopedia. Thank you. -- Gogo Dodo (talk) 20:59, 2 March 2014 (UTC)
Welcome to Wikipedia. Although everyone is welcome to contribute constructively to the encyclopedia, your addition of one or more external links to the page Space Shuttle Columbia disaster has been reverted.
Your edit here to Space Shuttle Columbia disaster was reverted by an automated bot that attempts to remove links which are discouraged per our external links guideline. The external link(s) you added or changed (http://www.youtube.com/watch?v=AaZW75jJjnw) is/are on my list of links to remove and probably shouldn't be included in Wikipedia. If the external link you inserted or changed was to a media file (e.g. a sound or video file) on an external server, then note that linking to such files may be subject to Wikipedia's copyright policy, as well as other parts of our external links guideline. If the information you linked to is indeed in violation of copyright, then such information should not be linked to. Please consider using our upload facility to upload a suitable media file, or consider linking to the original.
If you were trying to insert an external link that does comply with our policies and guidelines, then please accept my creator's apologies and feel free to undo the bot's revert. However, if the link does not comply with our policies and guidelines, but your edit included other, constructive, changes to the article, feel free to make those changes again without re-adding the link. Please read Wikipedia's external links guideline for more information, and consult my list of frequently-reverted sites. For more information about me, see my FAQ page. Thanks! --XLinkBot (talk) 21:52, 2 March 2014 (UTC)