The Adolfo Stahl lectures in astronomy, delivered in San Francisco, California, in 1916-17 and 1917-18, under the auspices of the Astronomical Society of the Pacific (1919)
Astronomical Society of the Pacific, Aitken, Robert Grant, 1864-1951 · San Francisco Stanford University Press · leaf 72
ances in the planetarysystem go, but close to the Sun in terms of the magnificentdistances which separate our Sun from the other suns. They What We Know About Comets 35 are moving in closed orbits around our Sun and travelingthrough space along with our Sun.^ Besides the comets which go out on… … FiG. 2. Jupiters Family of Comets (up to 1893). family of comets. The orbits of all those discovered up to1893 are represented in Fig. 2. It is seen that the outer partsof all of them—the aphelia—are in the vicinity of Jupitersorbit. Similarly, there are a few comets related to Saturnsorbit, a few…
Astronomy
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