Lockyer, Norman, Sir, 1836-1920 · London : Macmillan and Co. · leaf 160
ntation of Donatis comet, visible in 1858, which willmake a general descriptionclear. The brighter part ofthe comet is called the head,or coma, and sometimes thehead contains a brighterportion still, called thenucleus. The tail is thedimmer part flowing fromthe head, and, as obser\-edin different… … IHs 19.— Donatis Comet (generalview). transparent that all but the faintest stars are easily seen 126 ASTRONOMY. through them. In 1858, the bright star Arcturus was seenthrough the tail of Donatis comet at a place where thetail was 90,000 miles in diameter. 292. The number of comets recorded from…
Astronomy · Solar system
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