THE CENTURY'S PROGRESS IN ASTRONOMY 



It is true the sun also contains some seeming elements 

 that are unknown on the earth, but this is no matter for 

 surprise. The modern chemist makes no claim for his 



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A TYPICAL STAR CLUSTER CEKTAURI 



Clements except that they have thus far resisted all 

 human efforts to dissociate them ; it would be nothing 

 strange if some of them, when subjected to the crucible 



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