WEBVTT FILE 1 00:00:10.385 --> 00:00:13.179 What we're looking at here is an image from the Hubble Space 2 00:00:13.179 --> 00:00:16.307 Telescope of the Sunrise Arc, which is this long 3 00:00:16.307 --> 00:00:19.144 red banana that you can see on the screen, right there. 4 00:00:19.477 --> 00:00:23.440 And then what's highlighted by that white arrow is the lensed star 5 00:00:23.440 --> 00:00:27.193 Earendel, which is the most distant star that's been observed so far. 6 00:00:27.235 --> 00:00:33.033 So we're seeing this entire galaxy as it was about 13 billion years ago. 7 00:00:34.034 --> 00:00:37.162 This particular discovery was thanks to gravitational lensing. 8 00:00:37.454 --> 00:00:38.329 So what you can kind of see 9 00:00:38.329 --> 00:00:41.416 in the background here with all these sort of yellowish galaxies, 10 00:00:41.499 --> 00:00:44.502 those are all galaxies that are part of a galaxy cluster. 11 00:00:44.627 --> 00:00:45.670 And this galaxy cluster is 12 00:00:45.670 --> 00:00:49.549 a very massive object that actually bends the spacetime around it. 13 00:00:49.841 --> 00:00:53.845 And as the light from this distant galaxy passes through that distorted spacetime, 14 00:00:54.054 --> 00:00:55.180 it gets magnified. 15 00:00:55.180 --> 00:00:58.224 And stretched out into this long arc that we see. 16 00:00:59.642 --> 00:01:01.895 Because of exactly where all these galaxies are 17 00:01:01.895 --> 00:01:05.065 there is a peak right here, right on this point, 18 00:01:05.065 --> 00:01:08.318 where the magnification starts to skyrocket, 19 00:01:08.318 --> 00:01:11.488 so it starts to become an incredibly high magnification just right in that spot. 20 00:01:11.488 --> 00:01:13.615 And that's how we able to to see this one star. 21 00:01:14.032 --> 00:01:16.326 The original image looks like this. 22 00:01:16.326 --> 00:01:19.913 So this is where you can see, you know, all of these sort of fuzzy 23 00:01:19.913 --> 00:01:23.374 yellow galaxies around here form a pretty clear cluster. 24 00:01:23.666 --> 00:01:24.876 You can still 25 00:01:24.876 --> 00:01:28.296 kind of see this faint red arc down here at the bottom. 26 00:01:28.296 --> 00:01:30.423 And that was what piqued our interest originally. 27 00:01:30.423 --> 00:01:33.718 Anything that's that red is going to be at a very high redshift, 28 00:01:33.718 --> 00:01:35.428 which means it's very early in the universe. 29 00:01:35.428 --> 00:01:38.348 So that was kind of why we first got interested. 30 00:01:38.348 --> 00:01:41.226 You can also see just kind of how long this object is. 31 00:01:41.226 --> 00:01:46.648 So this is the longest lensed arc that we've seen at a redshift six or above. 32 00:01:46.648 --> 00:01:49.067 So that's within the first billion years of the universe. 33 00:01:49.484 --> 00:01:54.030 And it kind of opens the door to looking at the very first generation of stars. 34 00:01:54.030 --> 00:01:58.243 So, the very first stars would form, you know, a few hundred 35 00:01:58.243 --> 00:02:00.745 million years, maybe 1 to 300 million years after the Big Bang. 36 00:02:00.745 --> 00:02:02.038 It's kind of that ballpark. 37 00:02:02.038 --> 00:02:04.582 So this kind of gives us a foot in that door. 38 00:02:04.582 --> 00:02:07.836 That gives us a really good chance to continue to discover 39 00:02:07.836 --> 00:02:09.420 more of these objects and, 40 00:02:09.420 --> 00:02:11.506 you know, hopefully push that boundary a little bit further 41 00:02:11.506 --> 00:02:15.218 and really get a chance to to find one of the very first generation stars.