How did Isaac Newton revolutionize the use of telescopes?

When telescopes were first invented, around the time of Hans Lippershey and Galileo, they had lenses. Lenses have a problem called chromatic aberration, which causes different colored images to form at different places, making it impossible for, say, blue and red colored images to form at the same focus. Isaac Newton changed the way that telescopes are used by substituting two mirrors for lenses: a primary mirror and a secondary mirror. Light from a distant object first hits the curved primary mirror, which reflects it to the smaller secondary mirror, which focuses light onto an eyepiece. This method is used by almost all modern telescopes.

Isaac Newton revolutionized the use of telescopes by inventing the reflecting telescope in 1668. Unlike the traditional refracting telescopes, which used lenses to bend light, Newton's reflecting telescope utilized mirrors to focus light, resulting in clearer and sharper images. This innovation overcame many of the limitations of refracting telescopes, such as chromatic aberration, and paved the way for the development of larger and more powerful telescopes in the future.