The young astronomer; or, The facts developed by modern astronomy, collected for the use of schools and the general reader (1847)
Abbott, John S. C. (John Stevens Cabot), 1805-1877 · New York, J.C. Riker [etc.] · leaf 99
SECOND THEORY Again, it has been suggested that these variable starsmay not be globes, but circles, like a grindstone in What is the case with others ? What is said of a star in the con-stellation Perseus ? What is the cause of this phenomenon! ? De-scribe the first theorv. The second. VARIABLE…
Astronomy
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