Let us suppose that the Earth in these two hours will have arrived at E.The Earth then, being at E, will see the Eclipsed Moon at C, which it left an hour before, and at the same time will see the sun at A.For it being immovable, as I suppose with Copernicus, and the light moving always in straight lines, it must always appear where it is.

But one has always observed, we are told, that the eclipsed Moon appears at the point of the Ecliptic opposite to the Sun; and yet here it would appear in arrear of that point by an amount equal to the angle GEC, the supplement of AEC.

This, however, is contrary to experience, since the angle GEC would be very sensible, and about 33 degrees.

Now according to our computation, which is given in the Treatise on the causes of the phenomena of Saturn, the distance BA between the Earth and the Sun is about twelve thousand diameters of the Earth, and hence four hundred times greater than BC the distance of the Moon, which is 30 diameters.

Then the angle ECB will be nearly four hundred times greater than BAE, which is five minutes; namely, the path which the earth travels in two hours along its orbit; and thus the angle BCE will be nearly 33 degrees; and likewise the angle CEG, which is greater by five minutes.
But it must be noted that the speed of light in this argument has been assumed such that it takes a time of one hour to make the passage from here to the Moon.