State three scientific achievement of sir Isaac Newton.

Sir Isaac Newton's three major scientific achievements include:

1. Formulating the Laws of Motion and Universal Gravitation: These laws laid the foundation for classical mechanics, explaining the motion of objects on Earth and in space.
2. Co-inventing Calculus: He developed infinitesimal calculus (alongside Gottfried Leibniz), a powerful mathematical tool essential for understanding change and motion.
3. Pioneering Work in Optics: He demonstrated that white light is composed of a spectrum of colors and developed the first reflecting telescope.