| http://www.w3.org/ns/prov#value | - rance, the Mount Wilson Observatory in California and the 1920s Einstein Tower in Potsdam, all sites where important contributions were made in the era of modern science.Eventually, the portal will not only feature sites and monuments, but also other types of astronomical heritage such as portable instruments and intangible cultural practices, as well as dark-sky locations, meaning places wher
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