Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 212
ts reappearance in 1758. His predictionwas verified by its reappearance on ChristmasDay of that year. This comet has since beenknown by his name, and regularly appears abouton time, but as it requires about seventy-six yearsto complete its orbit, very few of us will see itagain. Most likely this… … A TYPICAL COMET AS VISIBLE TO THE UNAIDED EYE. The bright spot in the tip is the nucleus. The bright part around it is the coma, which gradually merges into the tail, which, itself, fades away imperceptibly into the sky. astronomical measurements, their lives are short. As they repeat their…
Children's literature
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