• There is no one centre in the universe.

• The Earth's centre is not the centre of the universe.

• The centre of the universe is near the sun.

• The distance from the Earth to the sun is imperceptible compared with the distance to the stars.

• The rotation of the Earth accounts for the apparent daily rotation of the stars.

• The apparent annual cycle of movements of the sun is caused by the Earth revolving round it.

• The apparent retrograde motion of the planets is caused by the motion of the Earth from which one observes.

Geometrically rendered the Copernican principle set sail for inevitable extinction.

In De revolutionibus Copernicus states several reasons why it is logical that the sun would be at the centre of the universe:-

At the middle of all things lies the sun. As the location of this luminary in the cosmos, that most beautiful temple, would there be any other place or any better place than the centre, from which it can light up everything at the same time? Hence the sun is not inappropriately called by some the lamp of the universe, by others its mind, and by others its ruler.

Copernicus's cosmology placed a motionless sun not at the centre of the universe, but close to the centre, and also involved giving several distinct motions to the Earth. The problem that Copernicus faced was that he assumed all motion was circular so, like Ptolemy, was forced into using epicycles (see for example [78]). It was consequently considered implausible by the most of his contemporaries, and by most astronomers and natural philosophers until the middle of the seventeenth century. In the intended Preface of De revolutionibus orbium coelestium Copernicus showed that he was fully aware of the criticisms that his work would attract:-

Perhaps there will be babblers who, although completely ignorant of mathematics, nevertheless take it upon themselves to pass judgement on mathematical questions and, badly distorting some passages of Scripture to their purpose, will dare find fault with my undertaking and censure it. 
I disregard them even to the extent as despising their criticism as unfounded.

Nicolaus Copernicus

Entry: al·che·my...   transmute copernican gold
Pronunciation: 'al-k&-mE
Function: noun
Etymology: Middle English alkamie, alquemie, from Middle French or Medieval Latin; Middle French alquemie, from Medieval Latin alchymia, from Arabic al-kImiyA', from al the + kImiyA' alchemy, from Late Greek chEmeia
Date: 14th century
1 : a medieval chemical science and speculative philosophy aiming to achieve the transmutation of the base metals into gold, the discovery of a universal cure for disease, and the discovery of a means of indefinitely prolonging life
2 : a power or process of transforming something common into something special
3 : an inexplicable or mysterious transmuting

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