Democratic Sentinel, Volume 9, Number 15, Rensselaer, Jasper County, 8 May 1885 — An Interesting Celestial Visitor. [ARTICLE]

An Interesting Celestial Visitor.

Encke’s comet, which travels around the sun in about three and a half years without going beyond the boundaries of the solar system, and which has the honor of being the first known comet of short period, is chiefly remarkable on account of the retardation of its motion. This has amounted to about four days since 1819, tnd is supposed hy some astronomers to prove the existence of a resisting medium in ’spacA It is visible only with a telescope.