Sharpless, Isaac, 1848-1920, Philips, G. M. (George Morris), 1851-1920, joint author · Philadelphia, J.B. Lippincott company · leaf 173
Fig. 39.—Phenomena of Jupiters Satellites. is eclipsed while passing from 1 to 2. It is then en-tirely invisible, which proves that if Jupiter emits anylight of his own it must be very little. From 3 to 4the satellite is again invisible, because it is behind theplanet. This is an occultation of the…
Astronomy
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