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actual astronomer atmosphere attraction axis BENJAMIN PEIRCE body bolides celestial centrifugal force chaos cluster collision comet computation condensation constitution cooling corresponding cosmogony creation density direction discovery divine doctrine earth ence energy equilibrium evolution fact faith firmament force gaseous geological geometers geometry gravitation harmony heat heavens Herschel human hypothesis ical ideality increase infinite inner satellites intellectual investigation John Herschel Jupiter lectures less Leverrier light limits liquid mass mathematical mean distance ment meteors mind Mosaic record motions of Uranus Nature nebula nebular theory nebulosity Neptune nucleus observation orbit organic origin parabolic parabolic orbit particles Peirce perihelion perturbations of Uranus phenomena phenomenon philosopher physical planet portion position potentiality precession prediction present profound radiation rigid ring rotation satellites Saturn Sir William solar system solid soul space spiritual stellar sun's surface tail telescope temperature Thomson thought tion Uranus velocity visible whence
Seite 16 - If I ascend up into heaven, thou art there: if I make my bed in hell, behold, thou art there. If I take the wings of the morning, and dwell in the uttermost parts of the sea; Even there shall thy hand lead me, and thy right hand shall hold me. If I say, Surely the darkness shall cover me; even the night shall be light about me, Yea, the darkness hideth not from thee; but the night shineth as the day: the darkness and the light are both alike to thee.
Seite 62 - This remarkable belt has maintained, from the earliest ages, the same relative situation among the stars; and, when examined through powerful telescopes, is found (wonderful to relate!) to consist entirely of stars scattered by millions, like glittering dust, on the black ground of the general heavens.
Seite 64 - Way, and clustering groups sufficiently insulated and condensed to come under the designation of irregular, and in some cases pretty rich clusters. But besides those, there are also nebulae in abundance, both regular and irregular; globular clusters in every state of condensation; and objects of a nebulous character quite peculiar, and which have no analogue in any other region of the heavens.
Seite 201 - It is not, however, a necessary conclusion that Neptune will not account for the perturbations of Uranus, for its probable mean distance of about 30 is so much less than the limits of the previous researches, that no inference from them can be safely extended to it.
Seite 200 - THE PLANET NEPTUNE is NOT THE PLANET TO WHICH GEOMETRICAL ANALYSIS HAD DIRECTED THE TELESCOPE ; that its orbit is not contained within the limits of space which have been explored by geometers searching for the source of the disturbances of Uranus ; and that its discovery by Galle must be regarded as a happy accident.
Seite 199 - Walker differ so widely from the predictions, that he has been induced to make a careful reexamination of the observations. He has not only himself verified Mr. Walker's distance of 30, and the consequent angular motion ; but Mr. George P. Bond, of the Cambridge Observatory, has also, at his request, verified this distance and motion from the Cambridge observations alone. From these data, without any hypothesis in regard to the character of the orbit, he has arrived at the conclusion, that the planet...
Seite 10 - ... spiritual nourishment ; hence it is life itself, and is the worthy occupation of an immortal soul." These lectures were fortunately published in a volume (" Ideality in Science "), so that they are readily accessible. What a wonderful passage is this ! — 16 " What is this which we call fact ? It is not a sound; it is not a star. It is sound heard by the ear ; it is a star seen by the eye. In the simplest case it is the spiritual recognition of material existence. . . . There are even physical...
Seite 202 - ... continuous law by which such inferences are justified is abruptly broken at this point, and it was hence an oversight in M. LeVerrier to extend his inner limit to the distance 35. A planet at the distance 35-3 would revolve about the sun in 210 years, which is exactly two and a half times the period of the revolution of Uranus. Now, if the times of revolution of two planets were exactly as 2 to 5, the effects of their mutual influence would be peculiar and complicated, and even a near approach...
Seite 197 - It is probable that their surfaces would become colder if there were not an external supply of heat from the collision of meteors. 4. Large celestial bodies are constantly deriving superficial heat from the collision of meteors, till at length the surface becomes superheated gas, which constitution must finally extend through the mass. 5. Small celestial bodies are constantly cooling till they become invisible solid meteors. 6. The heat of space consists of two parts : first, that of radiation principally...
Seite 189 - The birth of Christianity changed the whole firmament of thought. It was a new spiritual world into which the race was transported. Centuries of profound brooding were required ere mankind could shake off the torpor of the ancient darkness, and awake to the morning light of the Gospel. But when at last the eyes were fully opened, the natural world was revealed in a new light, learning revived in grander aspects, and science was transformed from speciality to generality."— [Prof.