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Appletons' Popular Science Monthly, January 1900 - Vol. 56, November, 1899 to April, 1900
One of the most remarkable chapters in the astronomy of the past century was commenced on the very first night with which that century began. It was, indeed, on the 1st of January, 1801, that the discovery of a new planet was announced. The five great orbsJupiter, Saturn, Mercury, Mars, and Venushad been known from the earliest times of which we have records, and the planet Uranus had been discovered nearly twenty years before the previous century closed. The solar system was thus thought to consist of these six planets and, of course, the earth. On the memorable night to which I have referred, Piazzi, the astronomer, made a remarkable advance. He discovered yet another planetthe seventh, or eighth, if the earth be included. The new body was a small object in comparison with those which were previously known. It was invisible to the unaided eye, and seemed no more than a starlike point even when viewed through a telescope. It revolved around the sun in the wide region between the orbits of Mars and Jupiter. This discovery was speedily followed by others of the same kind, and, as the century has advanced to its close, the numbers of these planetsasteroids, as they are generally calledhas been gradually increasing, so much so that now, of these little bodies known to astronomers, the number amounts to about four hundred and fifty. ......Buy Now (To Read More)
Ebook Number: 47180
Author: Various
Release Date: Oct 23, 2014
Format: eBook
Language: English
Editor: Youmans, William Jay, 1838-1901
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