In order to better comprehend the mighty vastness of this space we will measure it again into units of 260,000 millions of cubic miles, (the size of earth), and with a radius based on the number of miles of light’s flight in minutes, days, months, and years, ascertain the number of different sized spheres that such radii would form. A sphere with earth as its centre, and a radius of one minute of light’s flight, would contain 21 billions of earths; a sphere whose radius was _nine_ minutes would contain 15,310 billions of earths, one of an hour’s radius 4,500 trillions, one of a day’s 62 quintillions, a week’s 20 sextillions, a month’s 1675 sextillions, and a year’s radius of the flight of light three octillions. To go still further; 10 year’s radius of light’s flight would contain three nonillions, 100 year’s three decillions, 1,000 year’s three undecillions, 1,000,000 year’s three quattuordecillions, and a thousand million years radius would contain three septendecillions of such earths. Now to compare these great numbers we will suppose, as before, that there are 200 drops of water in one cubic inch, making 50 quadrillions of drops in one cubic mile of water, 50 quintillions in one thousand cubic miles, 50 sextillions in one million of such miles, 50 septillions in one thousand millions, and 50 octillions in one million millions of cubic miles. We need go no further for the immensity of space is seen by comparison of the earths in the above spheres with the number of drops of water in all those cubic miles. We find the sphere that has but one day’s flight of light as a radius will contain more earths of 260,000 millions of cubic miles each, than there are water-drops in 1,000 cubic miles; or, in other words, as many drops as there would be in 100 Sounds like Long Island from Bridgeport to New York, allowing those sounds to average 100 feet in depth and each contain ten cubic miles of water. The thought so astounding and well nigh inconceivable is that a sphere of such vast dimensions has only a radius of a single day’s flight of light, light that starting from its centre would pass the circumference of the sphere in one day; while a sphere with a radius of _ten_ year’s flight of light—a distance only a little way beyond the nearest known star in the northern heavens, 61 Cygni—could contain as many earths as there are drops in 60 millions of millions of cubic miles. Yet a sphere with that radius of ten year’s flight would cover such an enormous quantity of space as to be beyond our comprehension and still be of no consequence in comparison with the spheres of one hundred, one thousand, one million, or one thousand millions of years radii.