The first clear proof of the existence of a planet outside the solar system has now been accepted by astronomers. The proof consists of the mathematical evidence of the presence of a dark companion revolving around one of the stars in Cygnus (the Swan). The presence of this body was first reported last autumn by Swarthmore's Astronomer K. Aa. Strand.
No less an authority than Princeton's grey, gentle Henry Norris Russell, whom many consider the greatest living astronomer, now goes even further: he declares that the Strand discovery should settle the centuries-old argument...
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