"Giordano Bruno was a martyr for science!" is a myth often repeated on social media. Giordano Bruno did no science and was not a scientist. Bruno was a follower of a movement called Hermetism, which was a cult that based its beliefs on documents which were thought to have originated in Egypt at the time of Moses. These writings were linked with the teaching of the Egyptian God Thoth, the God of learning and had arrived in Italy from Macedonia in the 1460s. To followers of this cult, Thoth was known as Hermes Trismegitus, or Hermes the thrice great. The book of Toth placed the sun at the centre of the universe. This is what Bruno followed. No science - only adoption of Hermeticism.
