1 00:00:00,000 --> 00:00:07,140 Chelsea, I really wanted to do this sad or not nice information opener for the week for our fringy mini 2 00:00:07,240 --> 00:00:11,840 But it was behind a paywall. So unfortunately you ought to settle for a sciency one 3 00:00:12,340 --> 00:00:17,100 Saved by a paywall. Maybe maybe we needed to know that information 4 00:00:17,100 --> 00:00:20,780 I think we did but not everybody's going to agree with me on that 5 00:00:21,020 --> 00:00:24,940 Maybe one day someone will send us some money to get behind the paywall 6 00:00:24,940 --> 00:00:29,140 Yeah, it's that Wall Street Journal paywall. So I don't think we want to never mind 7 00:00:29,140 --> 00:00:35,340 Whoever was opening the app to send us some money. Let's hear the are you gonna still send us the money, please? Okay 8 00:00:35,840 --> 00:00:37,840 We could use the money 9 00:00:38,340 --> 00:00:41,720 Chelsea this one I found interesting it might not be that interesting 10 00:00:41,720 --> 00:00:48,100 But there's a few things that we kind of think we know about the universe one of those things the big bang happened 13 billion years ago 11 00:00:48,100 --> 00:00:51,040 Yes, here's an article from fizz.org 12 00:00:51,240 --> 00:00:58,520 Published by Bernard risk of the University of Ottawa on July 13th, 2023 new research puts the age of the universe at 13 00:00:58,520 --> 00:01:07,480 26.7 billion years nearly twice as old as previously believed our universe could be twice as old as current estimates according to a new study that 14 00:01:07,480 --> 00:01:12,820 challenges the dominant cosmological model and sheds new light on the so-called impossible early galaxy problem 15 00:01:12,820 --> 00:01:15,240 Which we talked about in a early episode 16 00:01:15,240 --> 00:01:20,660 So this one's a bit of a follow-up on that the work is published in the journal monthly notices of the Royal Astronomical Society 17 00:01:20,720 --> 00:01:26,500 Our newly devised model stretches the galaxy formation time by several billion years making the universe 18 00:01:26,500 --> 00:01:31,120 26.7 billion years and not 13.7 as previously estimated says author 19 00:01:31,420 --> 00:01:36,880 Rahandra Gupta adjunct professor of physics in the faculty of science the University of Ottawa for years 20 00:01:37,220 --> 00:01:42,840 astronomers and physicists have calculated the age of our universe by measuring the time elapsed into the big bang and by studying the 21 00:01:42,840 --> 00:01:46,600 oldest stars based on redshift of light coming from the distant galaxies in 22 00:01:47,020 --> 00:01:52,020 2021 thanks to new techniques and advances in technology the age of our universe was thus estimated at 23 00:01:52,020 --> 00:01:56,740 13.797 billion years old using the lambda CDM concordance model 24 00:01:56,740 --> 00:02:00,080 however many scientists have been puzzled by the existence of stars like 25 00:02:00,240 --> 00:02:06,540 Methuselah that appear to be older than the estimated age of our universe and by the discovery of early galaxies in an advanced state of 26 00:02:06,780 --> 00:02:13,740 Evolution made possible by the James Webb's base telescope these galaxies existing a mere 300 million years or so after the big bang 27 00:02:13,860 --> 00:02:18,500 Appears to have a level of majority in mass typically associated with billions of years of cosmic evolution 28 00:02:18,500 --> 00:02:23,200 Furthermore, they are surprisingly small in size adding another layer of mystery to the equation 29 00:02:23,360 --> 00:02:30,940 Zwicky's tired light theory proposes that the redshift of light from distant galaxies is due to the gradual lost energy by photons over vast 30 00:02:30,940 --> 00:02:32,000 cosmic distances 31 00:02:32,000 --> 00:02:38,800 However, it was seen to conflict with the observation yet Gupta found that by allowing the theory to coexist with the expanding universe 32 00:02:38,800 --> 00:02:44,760 It becomes possible to reinterpret the redshift as a hybrid phenomenon rather than purely due to expansion in addition 33 00:02:44,760 --> 00:02:51,600 Zwicky's tired light theory Gupta introduces the idea of evolving coupling constants as hypothesized by Paul Dirich 34 00:02:51,600 --> 00:02:57,320 Coupling constants are fundamental physical constants that govern the interaction between particles according to Dirich 35 00:02:57,320 --> 00:03:04,140 These constants might have varied over time by allowing them to evolve the time frame for the formation of early galaxies observed by the James Webb 36 00:03:04,140 --> 00:03:08,840 Telescope at high redshift can be extended from a few hundred million years to several billion years 37 00:03:08,840 --> 00:03:15,680 This provides a more feasible explanation for the advanced level of development and mass observed in these ancient galaxies 38 00:03:15,920 --> 00:03:21,440 Moreover, Gupta suggests that the traditional interpretation of the cosmological constant which represents dark energy 39 00:03:21,520 --> 00:03:25,100 Responsible for the accelerating expanse of the universe needs revision instead 40 00:03:25,100 --> 00:03:32,280 He proposed a concept that accounts for the evolution of the coupling constants its modification in the cosmological model helps address the puzzles of small 41 00:03:32,280 --> 00:03:36,120 Galaxy sizes observed in the early universe allowing for more accurate 42 00:03:36,120 --> 00:03:41,320 Observation so that's the article Chelsea. What do you think anything to say on it? Not really 43 00:03:41,320 --> 00:03:45,600 I mean, it's all really cool things that we're starting to find out about the universe 44 00:03:45,600 --> 00:03:51,280 It seems like everything I grew up knowing is all wrong and it's all new and shiny now all the time 45 00:03:51,280 --> 00:03:55,200 But it's not ever really anything that I completely understand 46 00:03:55,440 --> 00:04:02,260 No, but every time we get a better way of measuring we find out how we're fundamentally understanding it or might not be correct 47 00:04:02,260 --> 00:04:06,880 And there's two things that we really don't understand and we just call them dark matter and dark energy 48 00:04:06,880 --> 00:04:11,440 And this does seem to somewhat take away the problem of dark energy the thing that we just can't measure 49 00:04:11,440 --> 00:04:14,840 So that's a cool thing that means we kind of understand a bit more of the universe 50 00:04:14,840 --> 00:04:21,720 But I always like to quote we pretty much understand everything except the really big and the really small and the really hot and the really cold and 51 00:04:21,720 --> 00:04:24,240 Pretty much everything. Yeah, that's a good way to put it 52 00:04:24,360 --> 00:04:30,160 Yeah, just a new proposal out there fundamentally changing and answering the question of these old galaxies 53 00:04:30,160 --> 00:04:35,360 So following up to that one intro that we did and I can't remember which episode but that's okay because these are for in 54 00:04:35,360 --> 00:04:41,920 Jimini's now. Yeah, enjoy. Tell us anything else to add. No. Well, I hope you all have fun reveling in the 55 00:04:42,320 --> 00:04:48,480 Infantissimal size of your existence in this universe and they start to our Wednesday while you cope with that 56 00:04:48,480 --> 00:05:00,960 We'll see you on Friday. Bye.