Analysis of information sources in references of the Wikipedia article "Наблюдение за спутниками" in Russian language version.
the satellite spotters who, needing little more than a pair of binoculars, a stop watch and star charts, uncover some of the deepest of the government's expensive secrets and share them on the Internet. Thousands of people form the spotter community. Many look for historical relics of the early space age, working from publicly available orbital information. Others watch for phenomena like the distinctive flare of sunlight glinting off bright solar panels of some telephone satellites. Still others are drawn to the secretive world of spy satellites.
the satellite spotters who, needing little more than a pair of binoculars, a stop watch and star charts, uncover some of the deepest of the government's expensive secrets and share them on the Internet. Thousands of people form the spotter community. Many look for historical relics of the early space age, working from publicly available orbital information. Others watch for phenomena like the distinctive flare of sunlight glinting off bright solar panels of some telephone satellites. Still others are drawn to the secretive world of spy satellites.