⭐ He proposes that the heavenly bodies revolved in perfect circles around the earth

⭐ In 1510, he circulated the copy of his manuscript called
" Commentarius"

⭐ A canon at Frombork Cathedral in Polland who has great interest in Astronomy

⭐ Orbits of the Mars, Saturn, Jupiter lay outside the earth's

⭐ He believed that " the sun is the center of the universe" (Heliocentric Model)

⭐ Orbits of Venus and Mercury lay inside the orbit of the Earth, closer to the sun

⭐ The publication of his book " DE Revolution Orbium Coelestium ( On the Revolutions of the Heavenly Sphres) is cited as the heart of Scientific revolution

⭐ He joined the 5-year voyage through HMS Beagle on the Galapagos Island

⭐ He published the book "The Origin of the Species" which is on of the important works in the scientific literature

⭐ He changed the concept of world's creation and it's evolution

⭐ Presented how species evolved over time an presented traits and adaptation that differentiate species

⭐ A scientific method to study the human mind and neurotic illness

⭐ He focused on human sexuality and the evil nature of man

⭐ The aim of psychoanalysis is to release repressed emotions and experiences

⭐ Muhammad ibn Musa alKhwarizmi (Gave the name algorithm and algebra)

⭐ Ibn SIna (pioneered science of experimental medicine and conducted the first clinical trials

⭐ Ibn al- Haytham (Father of Optics; established an empirical proof of the intromission theory of light)

⭐ Muslim placed greater value on science experiments

⭐ Development of geometry was a product of necessity to preserve the layout and ownership of farmlands along Nile River

⭐ Center of Alchemy(medieval forerunner of chemistry

⭐ Early science activities were developed to improve the quality of life especially in building homes and dams