That they had a funny name!
He made many experiments and observations in the field of physics in general.
The branch of physics referred to as mechanics.
Galileo's main branch of science was astronomy, where he made groundbreaking contributions to the understanding of the solar system by observing the moons of Jupiter and the phases of Venus. He also contributed to the fields of physics and mechanics with his work on motion and gravity.
it is where he invents the telescope
The telescope
Galileo's contributions to modern science had a profound impact on people by challenging conventional beliefs, advancing the scientific method, and revolutionizing our understanding of the universe. His work laid the foundation for modern physics and astronomy, inspiring generations of scientists to question and explore the natural world.
The two main concerns of physics are the study and the understanding of matter and energy and their interactions.
The main relevant physics in this case is reflection of light.
physical and biological physics
Classical Physics and Modern Physics
There are two main branches of pure physics. These are quantum physics and applied physics and they both focus on different aspects of physics.
Found planets and satellites.