![An engraving depicting Isaac Newton's reflecting telescope. Isaac Newton Sr. (1643-1727) an English mathematician, astronomer, theologian, author, and physicist. Dated 20th century Stock Photo - Alamy An engraving depicting Isaac Newton's reflecting telescope. Isaac Newton Sr. (1643-1727) an English mathematician, astronomer, theologian, author, and physicist. Dated 20th century Stock Photo - Alamy](https://c8.alamy.com/comp/RJ93B4/an-engraving-depicting-isaac-newtons-reflecting-telescope-isaac-newton-sr-1643-1727-an-english-mathematician-astronomer-theologian-author-and-physicist-dated-20th-century-RJ93B4.jpg)
An engraving depicting Isaac Newton's reflecting telescope. Isaac Newton Sr. (1643-1727) an English mathematician, astronomer, theologian, author, and physicist. Dated 20th century Stock Photo - Alamy
![Descubiertos 5 asteroides próximos a la Tierra con el Telescopio Isaac Newton de La Palma | Instituto de Astrofísica de Canarias • IAC Descubiertos 5 asteroides próximos a la Tierra con el Telescopio Isaac Newton de La Palma | Instituto de Astrofísica de Canarias • IAC](https://www.iac.es/sites/default/files/styles/color/public/images/news/prensa930_1389.jpg?itok=kfBqkGes)
Descubiertos 5 asteroides próximos a la Tierra con el Telescopio Isaac Newton de La Palma | Instituto de Astrofísica de Canarias • IAC
A telescope made by Isaac Newton is displayed next to a statue of him... Foto di attualità - Getty Images
![CosmoSapiens on Twitter: "El 11 de enero de 1672 Isaac Newton revelaba su telescopio reflector, que a diferencia de los telescopios refractores que usan lentes este usaba espejos para enfocar la luz CosmoSapiens on Twitter: "El 11 de enero de 1672 Isaac Newton revelaba su telescopio reflector, que a diferencia de los telescopios refractores que usan lentes este usaba espejos para enfocar la luz](https://pbs.twimg.com/media/Dwo5PO-XQAE1s4I.jpg:large)