crucial
发表于 2025-3-26 21:58:53
Comets in Plain View: Great Comets of the Twentieth Century,Two waves of Great Comets were to sweep across twentieth-century skies. The four decades separating these waves saw tremendous advances in science and astronomy, and humanity finally got to see comets up-close through the eyes of space probes.
Common-Migraine
发表于 2025-3-27 03:51:34
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爵士乐
发表于 2025-3-27 07:26:22
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调味品
发表于 2025-3-27 12:33:19
Leitfaden für die Försterprüfungens. Modern entertainment media (and, sadly, some sensationalist news media) are fond of misrepresenting them. Cocooned in a growing nebula of gas and dust, their trailing tails growing longer night by night and they hang in the sky like the sword of Damocles. They possess an almost conscious intentio
媒介
发表于 2025-3-27 13:57:16
Leitfaden für die Försterprüfungensky—replete with dazzling head and glowing, sky-spanning tail, its position and appearance changing each night—looks as though it’s making a concerted effort to be the most important object in the night skies. As we’ll find out, that grand, jaw-dropping cometary spectacle is largely the result of ce
陶器
发表于 2025-3-27 21:24:38
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GRAZE
发表于 2025-3-27 23:50:56
Allgemeine Pflichten der Hebamme,e spectacular proportions in the night skies. A relatively small, intrinsically faint comet can appear bright and impressive in the night sky if its orbit brings it into close proximity with Earth; conversely, a far bigger, intrinsically brighter comet can appear small and faint if its perihelion ta
probate
发表于 2025-3-28 04:49:28
,Bau und Verrichtungen des menschl. Körpers,the mathematics involved in pinning down cometary orbits was pretty well established. The instrumentation with which to study comets had never been more advanced, and the sheer number of observers—both amateur and professional—interested in the study of comets was at an all-time high. No fewer than
TIA742
发表于 2025-3-28 08:57:17
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MURAL
发表于 2025-3-28 13:54:09
https://doi.org/10.1007/978-3-663-05508-22006 P1 (McNaught), whose tail grew to 40° in length, was able to be captured in all its glory in a single image. Of course, no optical instrument has a wide enough field of view to provide a complete visual view of any comet whose tail stretches more than a hand’s width across the sky (unless you l