More information about Newtonian telescopes can be found in our Guide to Space article here. Called a “Newtonian” telescope after its inventor, these types of telescopes have a polished mirror at the end of a tube, which reflects the image into an eyepiece at the top of the tube. The lens telescope is still in use today in smaller telescopes, but many larger and more powerful telescopes use a reflective mirror and eyepiece combination that was initially invented by Isaac Newton. You can obtain a version of Galileo’s original telescope today, at the Galileoscope web site. Instead of the initial 3 power magnification, he crafted a series of lenses that in combination allowed him to magnify things by 8, 20 and eventually 30 times. Galileo heard news of the telescope, and constructed his own version of it without ever seeing one. To learn more about how a telescope lens works, read our article on the telescope lens in the Guide to Space. Regardless of the inventor, most of the earliest versions of the telescope used a curved lens made of polished glass at the end of a tube to magnify objects to a factor of 3x. Another spectacle-maker, Sacharias Janssen, also claimed to have invented the telescope decades after the initial claims by Lipperhey and Metius. Lipperhey’s patent application is the earliest on record, so this is usually used to settle the debate, although another spectacle-maker, Jacob Metius of Alkmaar, a city in the northern part of the Netherlands, filed for a patent for the same device a few weeks after Lipperhey. ![]() There exists some confusion as to who actually came up with the idea first. Lipperhey combined curved lenses to magnify objects by up to 3 times, and eventually crafted sets of binocular telescopes for the Government of the Netherlands. Hans Lipperhey, a German spectacle maker, is generally credited as the inventor of the telescope, as his patent application is dated the earliest, on the 25th of September 1608. Maru tells him not to be scared and that MarILDA is her latest invention. Galileo was the first to use a telescope for the purpose of astronomy in 1609 (400 years ago in 2009, which is currently being celebrated as the International Year of Astronomy). 7:40 PM, Outside house, looking through telescope. Galileo Galilei is commonly credited for inventing the telescope, but this is not accurate. NOTE: StarTalk+ Patrons can watch or listen to this entire episode commercial-free.The history of the telescope dates back to the early 1600s. When Einstein’s relativity came along, why didn’t Newtonian physics go away? All that and more on another episode of StarTalk! What are the core tenets of the Big Bang Theory? Could the Big Bang just be a small piece of a bigger theory? Learn about Vulcan, the hypothetical planet pulling on Mercury that was invented to save Newton’s Laws. ![]() We walk through the scientific process and experimentations. We explore the frontier of scientific research and what ideas are being contested. Will something bad happen if the poles do flip? How often do Earth’s magnetic poles flip? Find out what magnets and aurora borealis have to do with each other. Does your compass actually point to the magnetic north pole? Are the north pole and the magnetic north pole the same thing? Why do we even have a magnetic field? Discover Earth’s molten core, creating a dynamo, and why dead planets like Mars don’t have one. Will Earth’s poles flip? We discuss Earth’s precession (wobble), bob, and flip. How does the JWST avoid detecting itself? Learn about features to keep the JWST cool and infrared-free. What bands of the electromagnetic spectrum can the it see in? Find out about William Herschel and his discovery of infrared light. Learn how the JWST is more than just its pictures. ![]() Are we rethinking the Big Bang? On this episode, Neil deGrasse Tyson and comic co-host Chuck Nice explore features of the James Webb Space Telescope, magnetism and how the aurora borealis works, and if the Big Bang is being debunked.
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