...Even so, there must be collisions absorbing the energy of rotation, and tendingto make the rings eventually fall into the planet...
George Forbes 「History of Astronomy」
...Sir Norman Lockyerholds, indeed, that nebulæ are, in reality, vast swarms of meteors, andthe light they emit results from continual collisions between theconstituent particles...
Cecil G. Dolmage 「Astronomy of To-day」
...The only effect of gravitational perturbation and of collisions isgradually to broaden out the whole ring, enlarging its outer anddiminishing its inner diameter...
Oliver Lodge 「Pioneers of Science」
...Considerations like these call up the chances of stellar collisions...
Cecil G. Dolmage 「Astronomy of To-day」
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