Another discovery he made in science is that he discovered that white light is made up of different colors. The colors are just like the colors in a rainbow. Newton discovered this by passing light through a glass prism. Newton also studied other parts of science. For example he spent some time studying the speed that sound travels through air.
In the Renaissance people always thought everything in space revolves around the Earth, but after Newton designed a new type of telescope with reflecting mirrors everything changed. He discovered that everything in the solar system revolves around the sun. Another discovery Newton made that is related to the Earth is the discovery of gravity. Newton discovered that the force of gravity is what keeps objects on the ground. During the years 1665-1666 Newton wrote a book on gravity.