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1: Please only post links to actual news sources, no tabloid sites, etc
2: No NSFW content
3: No hate speech, bigotry, propaganda, etc

[EOR]
[BOC]
For anyone that didn't realise due to the low res photos. 

The two plaques here without recovery dates are:

* [STS-51-L - The mission Challenger was meant to undertake but didn't due to exploding.](http://en.wikipedia.org/wiki/File:STS-51-L.svg)
* [STS-107 - The mission Columbia was returning from when it broke apart during re-entry.](http://en.wikipedia.org/wiki/File:STS-107_Flight_Insignia.svg)
[EOC]

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