Moulton, Forest Ray, 1872-1952 · New York, The Macmillan company · leaf 311
cal Hght why thereshould be a condensation exactlyopposite the sun. But at a point930,000 miles from the earth,which is beyond the apex of itsshadow, there is a region where,in consequence of the combinedforces of the earth and sun,wandering particles tend to circulate in a sort of… … Fig. 100. — Explanation ofthe zodiacal light. XII. QUESTIONS 1. Which of the methods of measuring the distance from the earthto the sun depend upon our knowledge of the size of the earth, andwhich are independent of it ? 2. Make a single drawing showing the orbits of all the planetsto the same…
Astronomy
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