; Saturn,
; and Georgium Sidus; move around him in their several orbs, and borrow from him their light and influence: on the surface of the sun are seen certain dark spots, but what they are is not known. They often change their place, number, and magnitude; and if they are really in the sun's body, as to all appearance they are, we must suppose that he moves around his axis in about twenty-five days and six hours; otherwise those various changes and alterations cannot be accounted for on the principles of reason and philosophy. The daily motion of the sun from east to west is not real; for, as I have observed before, the sun is fixed in the centre, and can have no motion but upon its own axis, that is, of turning round in the same space. The apparent motion, therefore, from east to west, must arise from the true and real motion of the earth on which we live, as I shall prove by and by. The body of the sun is so immensely large, that his diameter or thickness is computed to be 822,145 English miles, and a million of times larger than the globe of our earth; stupendous and amazing magnitude! which is supposed to be all fire, and by whose beams of light the whole system of beings about it is made visible.
The fixed stars which enamel and bespangle the concave expanse, or canopy of heaven, by numbers and lustre, make the night beauteous and delightful, which would otherwise be dark and horrible. The UNIVERSE has no determinate form or figure at all; for it is every way infinite and unlimited, and is called the MUNDANE SPACE, in which all worlds have their place and being.
The MOON, which is the next planet, or body, we are to consider, is, as to matter and form, not unlike our earth; for her body is uneven and spherical. The bright portions we see in her are the more prominent and illuminated parts of the land, as mountains, islands, promontories, &c. to which we are obliged for the light that is reflected to us; for the dark parts, which are supposed to be seas, lakes, vales, &c. are incapable of reflecting any light at all. Some of our philosopers
[sic]
assert, that there is an atmosphere of air about her; and, if so, then is she subject to the wind, clouds, rain, thunder, lightning, and other meteors, as well as the earth, and of consequence may be inhabited by men and animals. The diameter or thickness of the moon, is about 2175 English miles. The moon revolves round the earth in about 27 days, 7 hours, and 43 minutes. According to the different position of the moon in her orb, with respect to the sun and earth, she puts on different aspects or phases, as new, horned, full, &c. And since, at the same distance from the sun, she never appears of a different face, it is evident that she has a diurnal motion round her own axis, which is completed in the same time as her periodical revolution is about the earth. So that the Lunarians, or people of the moon, (if there are such) have their days and months perpetually of equal length.
The other planets, i.e. Mercury, Venus, the Earth, Mars, Jupiter, Saturn, and the Georgium Sidus,* all revolve in the same manner about the sun as the centre of the system; and in the order from the sun as they are named in the following figure of the UNIVERSE.
* The Georgium Sidus is a later discovery, having two moons; without the orb of Saturn, and not represented in the following scheme, for want of room.
The real motion of them all is from west to east, though sometimes they appear to move from east to west; and at other times seem not to move at all. And hence they are said to be direct, retrograde, and stationary. The Earth, Jupiter, and Saturn, are often eclipsed by the interposition of their respective moons, or satellites, between the sun and themselves; and these eclipses are sometimes partial, sometimes total, and sometimes central. The orbit of the earth (or the circle which the sun seems to describe round the earth), is called the ecliptic, which is divided into twelve equal parts, called signs, and are distinguished by the following names and marks, viz. Aries, the Ram,