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.