| Show TALKS ON ASTRONOMY AT Greenwich the moon has teen ol 01 served with scarcely any intermission for years THE celebrated star algol has a diameter of miles or geater than sun is tremendously large it is equal to earths but owing to its small density equals that of only earths IT has been demonstrated that many and probably most ofa the stars arp suns greater by far than our suna sg bivers of both light and heat q ahne sun gives times as much light as the full moon imes as much as the brightest star in he sky and as much as all the stars in the heavens combined SOSIE of the seas which the telescope reveals on the planet mars have quite suddenly become crossed by straight lines so straight and parallel that some astronomers have thought them tobe bridges upon an enormous scale oy highly civilized beings deverr advance in the improvement i of the telescope has brought to our knowledge still closer double stars the distance between them being so magnified as to become visible and mcatur aole but the spectroscope has revealed to us a double star so close that no telescope will show the distance between the two stars agree upon three motions of the earth the rotation on its basas in one day of twenty four hours the i revolution around the sun in one year of three hundred and sixty five and one quarter days and a very slow gyratory motion of its poles around and outside of angles to the plane of the ecliptic and coinciding with the line of rotation at its center in L years |
