Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York : H. Holt and company · leaf 482
ce, is a striking object, andwas suspected by Sir John Hekschbl to have a proper motion.Later observations seem to confirm this, and in particular the threebright stars on the left-hand edge of the right-hand (east) mass arenow more deeply immersed in the nebula than they were observedto be by… … Fig, 136.—the omega or horseshoe nebula. 463 ASTRONOMY. § 3. STAB CLUSTERS. The most noted of all the clusters is the Pleiades, which havealready been briefly described in connection with the constellationTaurus. The averapje naked eye can easily distinguish six starswithin it, but under favorable…
Astronomy
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