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 74
sumption that comets have originated in theouter parts of a rotating mass which has developed into thesolar system, came to the conclusion that comets should moveprevailingly in the direct sense when their orbit planes do notdififer greatly from the orbit planes of the planets, but thatthose whose… … Fig. 1—Comets tails lag behind the line joining the Sun (S) and thecomets nuclei. Orbital motion is carrying the nucleus of the cometto the risiht.
Astronomy
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
