A short course in astronomy and the use of the globes (1871)
Kiddle, Henry, 1824-1891 · New York, Chicago, Ivison, Blakeman, Taylor & co. · leaf 54
the latter in its annual motions around the sun. 52. Comets also revolve around the sun, but differfrom planets not only in their appearance but in thedirection of their motion, and the shape of their orbits. 50. What do the apparent motions of the planet* indicate ? What does the tele-scope reveal… … .~>2 THE SOL AR SYS TEM. For while the planets revolve from west to east, and inorbits nearly circular, comets sometime? 1 evolve from eastto west, and in very elongated orbits. By the orbit of a body is meant the line which it may beconceived to describe in revolving around some other body. 53.…
Astronomy
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