A popular handbook and atlas of astronomy, designed as a complete guide to a knowledge of the heavenly bodies and as an aid to those possessing telescopes (1891)
Peck, William, Sir, 1862-1925 · New York, G. P. Putnam's Sons · leaf 46
over them. In attempting the solution of this grand problem—viz., to apply the sounding line to the depths of space, the astronomer employs the same method as a surveyor when measuring the distance of some inaccessible object. A base line at right angles to the object is carefully measured, and… … Fig. 12. DIAGRAM SHOWING HOW THEDISTANCE OF STARS IS MEASURED. In determining the 1!) 20 A POPULAR HANDBOOK AND ATLAS OP ASTRONOMY. moons distance, a chord of the terrestrial surface can successfully be employed as a base line. The distanceof the sun, however, is so great that even the whole…
Astronomy
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