Astronomical Theory Quotes

People give ear to an upstart astrologer who strove to show that the earth revolves, not the heavens of the firmament, the sun and the moon. This fool wishes to reverse the entire scheme of astronomy; but sacred Scripture tells us that Joshua commanded the sun to stand still, not the earth

Accordingly, since nothing prevents the earth from moving, I suggest that we should now consider also whether several motions suit it, so that it can be regarded as one of the planets. For, it is not the center of all the revolutions.

Finally we shall place the Sun himself at the center of the Universe.

After Galileo was convicted (for heresy by the Spanish Inquisition) for his theory that the Earth revolved around the sun, ... he replied, 'Still, the Earth is moving.'

In the first book I shall describe all the positions of the spheres, along with the motions which I attribute to the Earth, so that the book will contain as it were the general structure of the universe. In the remaining books I relate the motions of the remaining stars, and all the spheres, to the mobility of the Earth, so that it can be thence established how far the motions and appearances of the remaining stars and spheres can be saved, if they are referred to the motions of the Earth.

Either... the moving intelligences of the planets are weakest in those that are farthest from the sun, or... there is one moving intelligence in the sun, the common center, forcing them all round, but those most violently which are nearest, and that it languishes in some sort and grows weaker at the most distant, because of the remoteness and the attenuation of the virtue.

Finally we shall place the Sun himself at the center of the Universe. All this is suggested by the system of procession of events and the harmony of the whole Universe, if only we face the facts, as they say, "with eyes wide open."

The earth is not in the centre of the Sun's orbit nor at the centre of the universe

To assert that the earth revolves around the sun is as erroneous as to claim that Jesus was not born of a virgin

Moreover, since the sun remains stationary, whatever appears as a motion of the sun is really due rather to the motion of the earth.

I can easily conceive, most Holy Father, that as soon as some people learn that in this book which I have written concerning the revolutions of the heavenly bodies, I ascribe certain motions to the Earth, they will cry out at once that I and my theory should be rejected.

That the machine of Heaven is not a hard and impervious body full of various real spheres, as up to now has been believed by most people. It will be proved that it extends everywhere, most fluid and simple, and nowhere presents obstacles as was formerly held, the circuits of the Planets being wholly free and without the labour and whirling round of any real spheres at all, being divinely governed under a given law.

The dark areas, the 'mare' plains of the moon, are so incredibly smooth that the English astronomer Thomas Gold has suggested that they might really be depressions filled to the brim with dust. A rocket hit would show whether they are that or not.

Therefore, having obtained the opportunity from these sources, I too began to consider the mobility of the earth.

The view that the sun stands motionless at the center of the universe is foolish, philosophically false, utterly heretical, because it is contrary to Holy Scripture. The view that the earth is not the center of the universe and even has a daily rotation is philosophically false, and at least an erroneous belief.

Our conviction that green cheese makes up a negligible fraction of the Moon's interior comes not from direct observation but from the gross incompatibility of that idea with other things we think we know.

Why would you listen to an astronomer about a planet?