Canadian Space Agency

The experiment was statistically designed according to a Box-Behnken response surface methodology with three parameters, and flown by NASA on a KC 135 plane in October 1989 under the direction of the Canadian Space Agency (CSA). 

A creative work is considered to be in the public domain if it is not protected by copyright, and it may be freely used by anyone. To take a photo of a building in open space requires no permission because the displayed art is in the public domain. However, taking a photo of a person requires specific permission. Most printed materials of the U.S., Canadian, and British governments are in the public domain and require no permission. Nonetheless, many government-sponsored agencies do copyright their materials, and therefore permission is required to use them. 

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