Astronomy for the use of schools and academies (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908, Rolfe, W. J. (William James), 1827-1910 · New York : Potter, Ainsworth, & Co. · leaf 413
Fig. 448. It is now a generally received theory that nebulae are thematerial out of which stars are formed. According to this 386 ASTRONOMY. theory, tne stars originally existed as nebulae, and all nebulsewill ultimately become condensed into stars. … Fig. 449. 383. Other Spiral Nebula. — Fig. 447 represents a spiral ASTRONOMY. 387 nebula of the Great Bear. This nebula seems to have sev-eral centres of condensation. Fig. 448 is a view of a spiral : 1 - -i*^$^*J|- %^ j Fig. 450. nebula in Cepheus, and Fig. 449 of a singular spiral nebulain the…
Astronomy
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