Question

Which of the following is not true about Galileo?



A.
He was such a brilliant mathematician that he became a professor of mathematics at the age of 25.


B.
He developed a new and improved thermometer and a better compass.


C.
He designed a telescope 10 times more powerful than earlier models.


D.
He was able to prove that Ptolemy's theory that the moon had a smooth, polished surface was true.


E.
At the Inquisition he signed a paper taking back his radical ideas about the Earth revolving around the sun.