... visible to the naked eye, and may be found without difficulty on any winter night. The three bright stars forming the sword-belt of Orion are known to every one who has noticed that constellation. Below this belt is seen another triplet of stars, not so bright, and lying in a north and south direction. The middle star of this triplet is the great nebula. At first the naked eye sees nothing to distinguish it from other stars, but if closely ... — Side-lights on Astronomy and Kindred Fields of Popular Science • Simon Newcomb
... is written in the terza rima, which consists of three verses arranged in such a way that the middle line of each triplet rhymes with the first or third verse of ... — National Epics • Kate Milner Rabb
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