Isaac Newton's Reflecting Telescope by Power And Syred, Nasa/science Photo Library
121 Isaac Newton Telescope Photos and Premium High Res Pictures - Getty Images
The Royal Society on Twitter: "Today in 1672, Isaac Newton revealed his reflector telescope and was elected a Fellow of the Royal Society. He was 29 years old https://t.co/U0PcTMNNGv #OnThisDay https://t.co/T725pzzw8w" /