This is the level we have chosen to work and which we will keep, because from our blog, we think we are making a serious contribution to the investigation, study and criteria to approach the issue of the Unusual Aerial Phenomena.
The web page of “The Smithsonian/NASA Astrophysics Data System” belongs to the Smithsonian Astrophysical Observatory (SAO) which is a "research institute" of the Smithsonian Institution. It is joined with the Harvard College Observatory (HCO) to form the Harvard-Smithsonian Center for Astrophysics (CfA).
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