1 00:00:02,535 --> 00:00:07,207 Hey, Stargazers! The James Webb Space Telescope is one of the most astonishing telescopes of modern 2 00:00:07,207 --> 00:00:12,946 times and part of what makes it stand apart from others are these iconic yellow honeycomb mirrors. 3 00:00:12,946 --> 00:00:18,151 So what do these mirrors do exactly? Well, without getting too bogged down by the mathematics - we'll 4 00:00:18,151 --> 00:00:22,555 leave that to the NASA experts - the mirrors significantly help scientists see objects 5 00:00:22,555 --> 00:00:27,861 that are billions of light years away and they do this because light is sort of like rain. 6 00:00:27,861 --> 00:00:33,066 Let me explain. When it's raining, a big bucket captures more rain than a small bucket, right. 7 00:00:33,066 --> 00:00:37,704 Telescopes are the same, which is why astronomers sometimes call them "light buckets." Bigger mirrors 8 00:00:37,704 --> 00:00:43,910 mean more light captured and thus we see clearer pictures, but JWST's mirrors aren't the ordinary 9 00:00:43,910 --> 00:00:49,049 kind. They have two distinctive features. They're bright and golden in color and they're hexagonal in 10 00:00:49,049 --> 00:00:54,654 shape. The gold color comes from - you guessed it - gold! Each segment is made up mainly of a metal 11 00:00:54,654 --> 00:00:59,526 called beryllium, but then this metal is coated in a very thin layer of gold. The gold significantly 12 00:00:59,526 --> 00:01:04,330 increases the reflectivity of a telescope in infrared red light which helps the telescope 13 00:01:04,330 --> 00:01:08,468 see things more clearly. The honeycomb shapes though, that's pretty awesome. The arrangement 14 00:01:08,468 --> 00:01:12,939 of the hexagons is distinctive. We didn't have a rocket that could launch a telescope with a 15 00:01:12,939 --> 00:01:17,610 mirror as big as the whole thing, so we had to fold it up. The segments allow for Webb to have 16 00:01:17,610 --> 00:01:22,449 the largest possible reflective surface area to make observations and it has the least amount of 17 00:01:22,449 --> 00:01:26,986 dead space in between each mirror once unfolded. Overall, this incredible engineering has made for 18 00:01:26,986 --> 00:01:31,191 a really cool-looking telescope which has already started sending us some really cool-looking images. 19 00:01:31,191 --> 00:01:34,194 And I know we can only see those images on a computer, but either way, keep looking up!