Transcription: Zdenyck-Mukulášek Against the existence of true double stars Ever since the invention of the telescope, double and multiple stars have been amongst the most keenly observed objects in the sky. Generations of stargazers have admired them and have been captivated by their beauty. There are close pairs, distant pairs, twins and non-identical pairs with components very different in brightness and colour. However, in the mid-18th century most astronomers believed that there were no true double stars, that we are dealing only with line of sight effects, so that one member of the pair lies almost beh ...
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