Winchell, Alexander, 1824-1891 · Chicago, S.C. Griggs and company · leaf 75
and has two nuclei which scarce-ly sustain any relations to thegeneral structure. H. 838, Fig-ure 13, has a ring of light consist-ing of a double bami of the spiralorder. It is surrounded by a burof light, and contains two nucleisymmetrically situated, and surrounded each by a darkzone, a luminous… … Fig. 12. Planetary Nebula, H. 2,-i41 Without a Nucleus. NEBUL.^. 47
Nebular hypothesis · Cosmogony
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