Sharpless, Isaac, 1848-1920, Philips, G. M. (George Morris), 1851-1920, joint author · Philadelphia, J.B. Lippincott company · leaf 253
247 CM< «fev … 248 DOUBLE STARS. 249 CHAPTER II. DOUBLE STARS.—VARIABLE STARS.—CLUSTERS AND NEB-ULA.—STRUCTURE OF THE UNIVERSE. Double Stars. 221. Many of the stars, when examined with a tele-scope, are seen to he made up of two or more parts,which are so close together that they present to the eyethe appearance…
Astronomy
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