Why might Galileo write a letter defending himself at this time?
(1615; when he wrote "Galileo's Letter")
3 answers
http://www.sparknotes.com/biography/galileo/section6.rhtml
In 1615, the Church had previously told Galileo to stop sharing his theory in public. Therefore, Galileo wrote a letter to defend himself in the face of those who criticized him and did not accept his theory about astrology.
bye i' to lazy to type