How telescopes really work #christmaslectures #telescope #spacescience

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Get a sneak peek of this year's Christmas Lectures! In this clip from lecture 1, Maggie Aderin-Pocock demonstrates how a Newtonian telescope works, with the help of smoke, mirrors, and lasers! -- For more out-of-this-world science, don't miss the 2025 Christmas Lectures, with Maggie Aderin-Pocock— they'll be on iPlayer in the UK on the 28, 29 and 30 of December, and Premiered here on our YouTube channel at 7pm GMT on 28 December. --- Join this channel to get access to perks: https://www.youtube.com/channel/UCYeF244yNGuFefuFKqxIAXw/join Subscribe for regular science videos: http://bit.ly/RiSubscRibe The Ri is on Twitter: http://twitter.com/ri_science and Facebook: http://www.facebook.com/royalinstitution and TikTok: https://www.tiktok.com/@ri_science Listen to the Ri podcast: https://podcasters.spotify.com/pod/show/ri-science-podcast Donate to the RI and help us bring you more lectures: https://www.rigb.org/support-us/donate-ri Our editorial policy: https://www.rigb.org/editing-ri-talks-and-moderating-comments Subscribe for the latest science videos: http://bit.ly/RiNewsletter Product links on this page may be affiliate links which means it won't cost you any extra but we may earn a small commission if you decide to purchase through the link.

Published 2025-12-24 · Watch on YouTube ↗
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