WEBVTT - Is there a dark side of the moon? 0:00:01.120 --> 0:00:04.280 Welcome to you stuff you should know from how Stuff 0:00:04.320 --> 0:00:12.760 Works dot com. Hey, and welcome to the podcast. I'm 0:00:12.840 --> 0:00:16.239 Josh Clark. There's Charles w Chuck Bryant. There's someone in 0:00:16.280 --> 0:00:20.479 our heads but it's not us. And there's Jerry over there. 0:00:20.840 --> 0:00:23.160 She's got her own self in her head. She's not Alumi. 0:00:24.520 --> 0:00:27.080 Our band does that song. Oh yeah, yeah, it's one 0:00:27.120 --> 0:00:28.880 of my favorites. It's a good one. We do it 0:00:28.880 --> 0:00:31.000 in the basement. It's not like, Actually we did it 0:00:31.040 --> 0:00:34.440 at one public show and I think after whatever's like, 0:00:34.479 --> 0:00:37.199 we shouldn't do that song out. Yeah, I was like, man, 0:00:37.240 --> 0:00:39.280 I love it. Yeah, where you like that was out 0:00:39.320 --> 0:00:42.640 of sight? I thought it was totally groovy, and like 0:00:42.720 --> 0:00:45.160 the audience didn't like it, or I think the rest 0:00:45.200 --> 0:00:47.080 of the band felt like it was. You know, there's 0:00:47.080 --> 0:00:48.879 a bunch of songs we do just in the basement 0:00:48.960 --> 0:00:51.800 for our own fun, and then there's you know, the 0:00:51.840 --> 0:00:53.760 songs that we'll do in front of people twice a year. 0:00:53.960 --> 0:00:57.280 You guys do yakety sex in the base. I wish 0:00:57.400 --> 0:00:59.840 did you see Dolly Partner played that live at the 0:01:00.120 --> 0:01:03.480 Huge Festival and she did a good job. Yeah, it 0:01:03.520 --> 0:01:05.560 was it. Bonorue right, No, it was that the one 0:01:07.080 --> 0:01:12.319 is it Glastonbury in the UK? Dolly Parton doing yakety 0:01:12.319 --> 0:01:16.200 sacks playing the saxophone at Glastonbury, Like, who would have 0:01:16.200 --> 0:01:18.480 thunk that? Whatever? She had the crowd eating out of 0:01:18.520 --> 0:01:20.520 the palm of her hand. Yes, she's putting out a 0:01:20.560 --> 0:01:24.400 new album that, um she's calling her gay friendly dance album. Yeah, 0:01:24.520 --> 0:01:26.280 there's a is it the name of the album or 0:01:26.319 --> 0:01:28.560 the name of the track is just a wee bit 0:01:28.640 --> 0:01:31.800 gay or something like that. I think that's one of Oh. 0:01:31.800 --> 0:01:33.520 I thought that's just how she described it. Is that 0:01:33.600 --> 0:01:35.800 the name of one of the songs. I don't know. 0:01:35.880 --> 0:01:37.920 It wasn't quote, but I couldn't tell if that was 0:01:37.959 --> 0:01:40.840 because it was a title or quote. Well, she's got 0:01:40.880 --> 0:01:42.920 a huge following in the gay community, and she's she's 0:01:43.000 --> 0:01:45.400 embraces it fully. Yes she does. And there's always been 0:01:45.440 --> 0:01:49.720 rumors about her. Oh I don't think those are correct. Well, 0:01:49.760 --> 0:01:52.000 I mean it doesn't mean there are rumors out there. 0:01:52.080 --> 0:01:55.560 She has a long, long term husband. Yeah, she's been 0:01:55.560 --> 0:01:58.360 married for like fifty years. But um, I think the 0:01:58.400 --> 0:02:01.440 fact that he's like, try and find a picture of 0:02:01.480 --> 0:02:05.840 this guy. He's a total recluse and she just says, 0:02:05.920 --> 0:02:08.519 that's just the nature of our relationship. Have you been 0:02:08.560 --> 0:02:10.560 to um It's like the Oprah thing. She has a 0:02:10.600 --> 0:02:12.959 really close girlfriend, and everyone's like, oh, well, of course 0:02:13.560 --> 0:02:17.359 Oprah and gayl are gay. Have you been You can't 0:02:17.400 --> 0:02:19.840 be friends lifelong friends with someone of the same sex. 0:02:21.000 --> 0:02:25.680 Have you been to Dollywood? Not? Still, you should go 0:02:25.760 --> 0:02:28.640 to Dollywood. There's a Dolly part museum that's part of 0:02:28.720 --> 0:02:32.640 Dollywood that's like worth the admission by itself. Can you 0:02:32.680 --> 0:02:34.920 just go to the museum. There's no reason to just 0:02:34.919 --> 0:02:37.280 go to the museum, but yeah you could. I mean, 0:02:37.320 --> 0:02:41.200 like it's worth going just for the museum. But then 0:02:41.240 --> 0:02:43.320 when you exit the museum, you've got all the rest 0:02:43.360 --> 0:02:47.000 of Dollywood to go hang out at, which is substantial, 0:02:47.200 --> 0:02:50.880 like she updated it. And there's roller coasters, which I 0:02:50.919 --> 0:02:53.840 don't ride. You don't ride roller coasters at all? No, 0:02:54.560 --> 0:02:56.920 you mean I went with some friends and like everybody 0:02:56.960 --> 0:02:59.440 else is riding roller coasters, and we were just like, 0:02:59.480 --> 0:03:02.680 that's okay. Have you never ridden all ridden roller coasters before? 0:03:02.720 --> 0:03:04.480 But I've gotten the point in my life where I'm like, 0:03:05.080 --> 0:03:07.240 I don't feel like being terrified out of my mind 0:03:07.320 --> 0:03:10.919 right now. So that's the reason. All right, the dark 0:03:10.960 --> 0:03:14.440 side of the moon is off the bang and start. Yeah, 0:03:14.440 --> 0:03:16.560 who'd have thought Dolly Partner would make an appearance in 0:03:16.560 --> 0:03:20.440 this one, Dolly park So there there, Chuck, We're talking 0:03:20.440 --> 0:03:23.120 about the dark side of the moon. And it turns 0:03:23.160 --> 0:03:25.160 out there is such thing as the dark side of 0:03:25.200 --> 0:03:31.120 the moon, but it's just misused in the popular vernacular. 0:03:32.520 --> 0:03:34.720 The idea of the dark side of the moon is 0:03:34.760 --> 0:03:37.760 that there's another side of the moon that we never see, 0:03:38.560 --> 0:03:42.640 and it's dark. It's out there, exposed to the cold 0:03:42.720 --> 0:03:46.840 chill of space, and um, the dark side of the 0:03:46.840 --> 0:03:49.280 moon is the side of the moon we never see, 0:03:49.440 --> 0:03:53.480 the one that faces opposite our per view. There is 0:03:53.520 --> 0:03:57.520 a side of the moon that we don't see. Right, 0:03:58.200 --> 0:04:00.440 We're going to go ahead and called at the Far 0:04:00.520 --> 0:04:02.960 side of the Moon. Yes, And I think that song 0:04:03.000 --> 0:04:05.000 would be equally as cool. I was thinking about it 0:04:05.040 --> 0:04:07.080 if it was I'll see you on the far side 0:04:07.120 --> 0:04:08.839 of the Moon. Yeah, that's even like a little more 0:04:08.880 --> 0:04:12.320 psychedelic if you ask me. Yeah, because of the whole 0:04:12.320 --> 0:04:15.880 far out thing. I don't know it resonated. In fact, 0:04:16.000 --> 0:04:18.440 in the basement, I'm gonna start singing that you are 0:04:18.480 --> 0:04:22.159 you gonna adapt it. Okay, there you go, just not 0:04:22.320 --> 0:04:27.160 out never again. So there is a far side of 0:04:27.200 --> 0:04:28.320 the moon. There is the side of the moon that 0:04:28.360 --> 0:04:32.200 we don't see. People are correct in assuming that, Um, 0:04:32.279 --> 0:04:34.279 But and there is a dark side of the moon. 0:04:35.000 --> 0:04:36.760 And sometimes the dark side of the moon and the 0:04:36.760 --> 0:04:38.120 far side of the moon are one and the same, 0:04:38.800 --> 0:04:42.120 but sometimes they're not. Yeah, it gets a little confusing, 0:04:42.680 --> 0:04:45.080 But everything I just said is true. Yeah, And it's 0:04:45.120 --> 0:04:47.839 our job to get you to wrap your heads around this, 0:04:48.000 --> 0:04:52.680 like we had to, yeah, because it's extraordinarily confusing. It's 0:04:52.680 --> 0:04:56.839 almost like, why couldn't just the popular conception be correct? 0:04:57.520 --> 0:05:00.640 Because this is kind of difficult until you wrap your 0:05:00.640 --> 0:05:03.120 head around it and then it's easy. But it is. 0:05:03.240 --> 0:05:06.839 It is hard at first. Everybody, so buckling, tie your 0:05:06.880 --> 0:05:10.359 shoes on tight. Yeah, maybe pack a granola bar and 0:05:10.440 --> 0:05:13.520 let's get down to this alright. So I guess we 0:05:13.560 --> 0:05:15.960 can start by saying that the moon, um is not 0:05:16.080 --> 0:05:19.640 like the sun. It doesn't generate that warm, lovely glow 0:05:19.960 --> 0:05:22.760 itself that you see. I think most people know at 0:05:22.760 --> 0:05:25.720 this point, UM, that that is reflection from the sun. 0:05:26.560 --> 0:05:29.000 And the moon is really big, and that's why it 0:05:29.040 --> 0:05:32.200 looks super bright. It's not really very reflective, but it's large. 0:05:32.800 --> 0:05:35.200 It is, so on a dark, dark night, a full 0:05:35.240 --> 0:05:38.720 moon looks really super bright because it's big. Yeah, and 0:05:38.760 --> 0:05:43.760 that's from sunshine sunshining on the moon. That's what makes 0:05:43.800 --> 0:05:47.960 the moon glow to us. There's also something called earth shine, 0:05:48.320 --> 0:05:52.280 and when there's no sunshine hitting the moon, as far 0:05:52.320 --> 0:05:55.280 as we can see, uh this, the Earth is still 0:05:55.279 --> 0:05:57.800 reflecting light on it. And they've recently found out that 0:05:57.839 --> 0:06:01.440 the moon if you can somehow and they figured out 0:06:01.440 --> 0:06:06.520 how to using radio telescopes, subtract any kind of sunlight 0:06:06.560 --> 0:06:10.200 interference and just isolate the earth shine. If you could 0:06:10.200 --> 0:06:12.360 just see that, then what you would be seeing is 0:06:12.400 --> 0:06:16.880 a kind of dark turquoise cobalt blue moon. Yeah. So 0:06:16.960 --> 0:06:20.520 technically the dark side of the moon is turquoise. Yes, 0:06:20.920 --> 0:06:23.080 and they have figured that out for the first time. 0:06:23.560 --> 0:06:25.520 Was it It was just this year, right, it was published. 0:06:26.279 --> 0:06:29.440 So that's exciting new news because they tried for a 0:06:29.440 --> 0:06:32.480 long time, that's right, but it took some smart people 0:06:32.960 --> 0:06:36.200 and people used to be dumb. Yes, So there is 0:06:36.240 --> 0:06:38.040 a there is a side of the moon, like we said, 0:06:38.040 --> 0:06:41.599 that we just don't see. And you would think, well, 0:06:41.960 --> 0:06:48.280 that's because the moon orbits the Earth right, which it does. 0:06:49.279 --> 0:06:52.600 And so if the Moon is just sitting there stationary 0:06:52.960 --> 0:06:55.800 orbiting around the Earth, of course we're going to see 0:06:55.800 --> 0:06:59.200 the same side all the time. That's a fallacy, that's 0:06:59.279 --> 0:07:03.680 right as a or a fact. If the Moon orbited 0:07:03.680 --> 0:07:06.840 the Earth and didn't rotate around its own axis, right, 0:07:07.160 --> 0:07:09.440 we would see all sides of the Moon at some 0:07:09.560 --> 0:07:12.800 point during that lunar orbit, which we call a month. 0:07:13.400 --> 0:07:15.400 And you can test this by just getting a tennis 0:07:15.400 --> 0:07:18.840 ball and keeping it still and rotating it around your 0:07:18.880 --> 0:07:23.240 hand and pretend your hand is Earth, and you would 0:07:23.240 --> 0:07:25.600 see at some point the Earth would see all sides 0:07:25.640 --> 0:07:29.200 of that tennis ball. The trick is the Moon rotates 0:07:29.200 --> 0:07:33.080 on its own axis at the same rate that it 0:07:33.200 --> 0:07:36.520 rotates around in orbit. And so now if you take 0:07:36.560 --> 0:07:39.600 that tennis ball and well you'd have to be pretty 0:07:39.600 --> 0:07:42.280 precise to spin it, but if you could spin it 0:07:42.320 --> 0:07:44.680 at the same rate that you're going around, you would notice. 0:07:44.800 --> 0:07:48.240 And there's a handy animation on this article on how 0:07:48.240 --> 0:07:50.000 stuff works dot Com. I thought it was a little 0:07:50.040 --> 0:07:52.960 fast and all at it to actually I think they 0:07:53.000 --> 0:07:54.600 need to go in and slow that thing down a 0:07:54.600 --> 0:07:57.920 little bit. It's handy and fast, but you would notice 0:07:57.960 --> 0:08:00.280 that if it's spinning on its own ax us at 0:08:00.280 --> 0:08:02.800 the same rate that it'sn't spinning in orbit, then you're 0:08:02.800 --> 0:08:05.160 going to see that same side. And it's kind of 0:08:05.200 --> 0:08:08.640 it seems like a miracle, but it's not. It's a 0:08:09.040 --> 0:08:18.960 mind boggling colossal cosmological coincidences coincidence. Okay, well then I'm 0:08:19.000 --> 0:08:21.400 hoping you can explain this to me, because Chuck, what 0:08:21.440 --> 0:08:26.800 you've just said, I think it bears repeating the the 0:08:26.800 --> 0:08:30.880 the Moon's orbit around Earth last twenty nine point five days. 0:08:31.480 --> 0:08:35.880 That's right. The Moon also rotates on its axis. That 0:08:36.000 --> 0:08:39.280 rotation you know, the Earth rotates on its axis that 0:08:39.360 --> 0:08:41.719 lasts about twenty four hours. We call it a day. 0:08:41.880 --> 0:08:43.800 The moon rotates on its texas, so it has the 0:08:43.880 --> 0:08:50.240 day too, but it's day last twenty nine point five days. 0:08:50.280 --> 0:08:54.559 So the Moon's rotation on its own axis and its 0:08:54.640 --> 0:08:58.000 orbit around Earth are the same, which is why no 0:08:58.040 --> 0:09:02.000 matter where you are on Earth, you can't see anything 0:09:02.360 --> 0:09:06.160 but the near side of the Moon because even though 0:09:06.160 --> 0:09:10.679 it's rotating on its axis, it's revolving in orbit at 0:09:10.679 --> 0:09:14.600 the same speed at the same rate around the Earth. 0:09:15.000 --> 0:09:17.320 So you will never see anything but the near side. 0:09:17.400 --> 0:09:20.920 Should we say this a third time? This was what 0:09:21.200 --> 0:09:23.040 this was what got me the most. That's why I'm 0:09:23.040 --> 0:09:26.280 saying it again, like this is this is mind boggling 0:09:26.360 --> 0:09:29.440 to me. So there's a day side of the moon 0:09:29.520 --> 0:09:31.040 and a night side of the moon, just like there 0:09:31.120 --> 0:09:34.360 was on Earth. Your son's gonna if you built a 0:09:34.360 --> 0:09:39.080 little moon lunar cabin, which would be great by the way. Yeah, 0:09:39.120 --> 0:09:42.199 you would see a sunrise in a sunset. I don't 0:09:42.200 --> 0:09:44.280 know if it would look exactly the same. Well, it 0:09:44.320 --> 0:09:47.080 would take a month. Yeah, it would be a very 0:09:47.080 --> 0:09:50.280 slow sunrise and a very slow sunset. What to us 0:09:50.360 --> 0:09:53.960 is a month, a lunar month, right, which involves the 0:09:54.000 --> 0:09:56.480 four phases of the moon, the waxing, the waning that 0:09:56.559 --> 0:09:59.360 give us the crescent, the full, the new, all that jazz, 0:09:59.480 --> 0:10:04.760 the super Yeah. Um that to the moon is a day. Yeah. 0:10:04.960 --> 0:10:07.240 So our whole concept of there being a far side 0:10:07.280 --> 0:10:09.360 of the moon and dark side of the moon and 0:10:09.640 --> 0:10:13.480 phases of the moon to the moon that it's just like, 0:10:13.559 --> 0:10:16.000 hey man, this is just a day to me, I'm 0:10:16.040 --> 0:10:20.040 just the moon right, reflecting light because just like over 0:10:20.080 --> 0:10:22.840 the course of twenty four hours on Earth, different parts 0:10:22.880 --> 0:10:25.800 of the Earth are exposed to the sunlight over the 0:10:25.840 --> 0:10:28.079 course of twenty nine point five days. Thanks to the 0:10:28.200 --> 0:10:30.439 rotation of the Moon, different parts of the Moon are 0:10:30.480 --> 0:10:33.600 exposed to sunlight. So that far side of the Moon 0:10:33.679 --> 0:10:37.080 that we never see because of the rotation and the 0:10:37.200 --> 0:10:41.160 orbit being the same for the Moon still gets bathed 0:10:41.160 --> 0:10:44.560 in sunlight for two weeks out of the year. Yeah, 0:10:44.600 --> 0:10:47.520 and sometimes we're we're seeing the night side, sometimes we're 0:10:47.520 --> 0:10:49.920 seeing the day side. It just depends on when it 0:10:50.000 --> 0:10:52.760 happens to fall during that lunar day. There's not the 0:10:52.800 --> 0:10:56.640 same thing as our day. It is confusing. That's why 0:10:56.640 --> 0:11:02.520 I said it twice but not a third time. Uh well, 0:11:02.559 --> 0:11:05.199 I guess we should explain a little something about gravity. 0:11:05.800 --> 0:11:08.920 And we did cover this. Um we did something on 0:11:08.960 --> 0:11:12.120 the tides, right title bulge. Yeah, he's at a video 0:11:12.240 --> 0:11:15.959 at least once we've discussed it and now we've done 0:11:16.000 --> 0:11:19.640 it at some point. The reason that everything is uh 0:11:19.720 --> 0:11:23.040 in synchronicity like that is because of gravity. It's because 0:11:23.080 --> 0:11:26.520 Earth is exerting gravitational pull on the Moon and it's 0:11:26.600 --> 0:11:29.800 locked it in with us. But the Moon's doing the 0:11:29.840 --> 0:11:32.840 same thing to us, and it's also getting further away 0:11:32.840 --> 0:11:35.800 from us. About an inch and a half a year. 0:11:35.880 --> 0:11:39.320 I think one point for eight inches per year. Uh, 0:11:39.320 --> 0:11:42.679 And that's what causes title bulge. The gravitational force on 0:11:42.760 --> 0:11:46.439 us causes the title bulge on the near side when uh, 0:11:47.679 --> 0:11:49.600 the Moon has the greatest poll so water is going 0:11:49.640 --> 0:11:52.120 to be pulled toward the Moon and inertia is overcome 0:11:52.160 --> 0:11:54.920 by gravity. And on the far side the opposite is true, 0:11:54.960 --> 0:11:58.760 but they're both bulges when when it's at its nearest 0:11:58.800 --> 0:12:00.960 point in orbit, and it's for this point in orbit, right, 0:12:02.200 --> 0:12:05.240 So if the Moon is moving further away from us 0:12:05.280 --> 0:12:07.680 by one point four eight inches per year, that means 0:12:08.160 --> 0:12:10.560 millions and billions of years from now things are going 0:12:10.600 --> 0:12:13.680 to be completely different. Yeah. Like a billion years ago, 0:12:13.880 --> 0:12:17.280 a day on Earth lasted eighteen hours, and I think 0:12:17.360 --> 0:12:23.160 the month was twenty days long days. Yeah, And then now, 0:12:23.240 --> 0:12:25.760 thanks to gravity and the effect of the Moon on 0:12:25.800 --> 0:12:30.400 Earth and vice versa, the earth rotation is slowing right. Yeah, 0:12:30.720 --> 0:12:34.440 And eventually I think in a billion or two years um, 0:12:34.520 --> 0:12:39.160 the day is expected to be about forty current Earth 0:12:39.240 --> 0:12:44.640 days long. Yeah, it says, uh, yeah, forty days. So 0:12:45.640 --> 0:12:48.040 that's interesting. I've never thought about that in terms of 0:12:48.679 --> 0:12:54.720 the evolution of mankind. Uh, not many people, not doing 0:12:54.760 --> 0:12:57.439 a whole lot, not a lot going on short days. 0:12:58.040 --> 0:13:01.960 Now everyone's populating the planet longer days and longer days. 0:13:02.360 --> 0:13:05.120 It's all coincidental, I'm sure. Yeah. I wonder what impact 0:13:05.200 --> 0:13:07.320 it would have on our sleep cycle if you still 0:13:07.360 --> 0:13:09.840 have one a billion years from now. Yeah, all right, 0:13:09.920 --> 0:13:11.679 So coming up in just a second, we're going to 0:13:11.720 --> 0:13:13.800 talk about the phases of the moon, because there's some 0:13:13.880 --> 0:13:20.959 misconceptions about that too. So, Chuck, were you had promised 0:13:21.000 --> 0:13:22.960 everyone that we would talk about the phases of the moon. 0:13:23.080 --> 0:13:24.840 I think that's called a tease. I think you should 0:13:24.880 --> 0:13:29.360 deliver on it. Oh yeah, well, I think well. Strickland 0:13:29.440 --> 0:13:31.440 Jonathan Strickland of tech Stuff wrote this article, by the 0:13:31.440 --> 0:13:35.040 way that we're working from um and there are some 0:13:35.120 --> 0:13:37.640 misconceptions about the phases of the moon, he thinks, and 0:13:37.679 --> 0:13:41.960 I agree. UM. One is that a new moon occurs 0:13:42.040 --> 0:13:44.840 when the Earth is blocking light from the Sun. And 0:13:44.880 --> 0:13:47.320 if you're just a dumb human like me and you 0:13:47.360 --> 0:13:49.440 look up and see a new moon, that's sort of 0:13:49.440 --> 0:13:52.040 what it looks like. It looks like the Earth is 0:13:52.040 --> 0:13:55.120 blocking it the Sun because you can almost see the 0:13:55.120 --> 0:13:58.480 shadow like clearly, that's what's going on, right, but it's 0:13:58.520 --> 0:14:03.640 not true because the moon is actually in between the 0:14:03.640 --> 0:14:05.640 Earth and the Sun at that point, which makes it 0:14:05.720 --> 0:14:11.560 impossible when when the moon is full, the Earth is 0:14:11.640 --> 0:14:14.719 between the Sun and the moon. Right, you're saying, well, 0:14:14.720 --> 0:14:17.560 no, no no, I'll say during a new moon, the moon 0:14:17.760 --> 0:14:20.320 is between the Sun and the Earth exactly, But for 0:14:20.360 --> 0:14:24.360 a full moon, the Earth is between the Sun and 0:14:24.360 --> 0:14:27.320 the moon. So both of them are kind of counterintuitive, 0:14:28.320 --> 0:14:30.800 but they make sense when you remember that the whole 0:14:30.800 --> 0:14:35.600 reason the moon glows is because of its exposure to sunlight. Right, 0:14:35.720 --> 0:14:39.320 So if the moon, if we see the side that's 0:14:39.360 --> 0:14:42.920 being exposed to sunlight, that means that the Earth is 0:14:42.960 --> 0:14:45.600 between the Sun and the moon. That's right, right, because 0:14:45.600 --> 0:14:47.600 that's the only way we could see that part exposed 0:14:47.640 --> 0:14:50.000 the sunlight. But if the moon between the Sun and 0:14:50.040 --> 0:14:52.000 the Earth, and the side that's being exposed to sunlight 0:14:52.080 --> 0:14:53.840 is the opposite side of the moon, the far side 0:14:53.840 --> 0:14:55.320 of the moon, so of course we couldn't see that. 0:14:55.360 --> 0:14:58.080 So that's what the new moon is. Yeah, And Jonathan 0:14:58.960 --> 0:15:02.200 he broke it down in another pretty easy way to understand, 0:15:02.240 --> 0:15:04.680 Like if you're if you're sitting in a room and 0:15:04.880 --> 0:15:07.840 someone and there's only a single light source like a spotlight. 0:15:07.880 --> 0:15:11.720 Let's say, and someone walks in between the light and you, 0:15:11.720 --> 0:15:13.840 you're gonna see a silhouette of them, but you're not 0:15:13.840 --> 0:15:16.040 going to be able to see their detail, right, But 0:15:16.520 --> 0:15:19.280 if you could somehow get behind them, right, you would 0:15:19.320 --> 0:15:22.360 see that their back is bathed in that light exactly. Now, 0:15:22.440 --> 0:15:26.800 if they walk behind you, you're both facing the sunlight. Yeah, 0:15:26.920 --> 0:15:28.680 so if you can just kind of make your eye 0:15:29.160 --> 0:15:31.120 travel around the side of your head to the back 0:15:31.560 --> 0:15:34.200 and poke out through your hair there, you would see 0:15:34.240 --> 0:15:36.560 that that person is a full moon, that's right, and 0:15:36.600 --> 0:15:39.360 the initial one when they are between you, when you 0:15:39.400 --> 0:15:41.720 see their silhouette, that is the new moon. So it 0:15:41.760 --> 0:15:43.120 makes sense when you think about it that way. I 0:15:43.120 --> 0:15:45.479 think it does. Or if you look at this illustration 0:15:45.480 --> 0:15:49.400 that's helpful to it definitely is like this is lunar phases. 0:15:49.600 --> 0:15:52.720 Is definitely one where it's like, just look at a picture. Yeah, 0:15:52.840 --> 0:15:55.880 it's so much easier to see. Yeah. The irony of 0:15:55.920 --> 0:15:59.080 this whole thing is is that thanks to the phases 0:15:59.080 --> 0:16:04.280 of the moon, this lunar day um that the dark 0:16:04.360 --> 0:16:07.080 side of the moon is sometimes the side that we 0:16:07.200 --> 0:16:10.520 can see. Yeah, that's the one that blows my mind 0:16:10.520 --> 0:16:13.520 a bit, you know, it's during a new moon, like 0:16:13.560 --> 0:16:15.880 we're still seeing the near side of the moon. That's 0:16:15.880 --> 0:16:19.120 all we'll ever see side that has the man in 0:16:19.160 --> 0:16:21.760 the moon or the rabbit making mochi in the moon. 0:16:22.520 --> 0:16:25.360 That's a Japanese thing. It's like their version of the 0:16:25.360 --> 0:16:27.480 man in the moon. It's a rabbit making mochi, which 0:16:27.520 --> 0:16:30.400 is like some sweet, sticky rice treats. And is it 0:16:30.520 --> 0:16:33.280 something that they see in the moon. Yeah, And what 0:16:33.320 --> 0:16:36.960 you're seeing are the lunar seas, like the Sea of Tranquility, 0:16:37.000 --> 0:16:42.680 all that stuff. And with the well, I guess with 0:16:42.720 --> 0:16:47.680 the advent of the Soviet Luna three spacecraft, that was 0:16:47.720 --> 0:16:50.200 the first time we ever saw the far side of 0:16:50.200 --> 0:16:54.640 the moon. And that was I think in nineteen and 0:16:54.800 --> 0:16:58.080 that crazy, so that long ago we were that advanced. Yeah, 0:16:58.200 --> 0:17:00.600 it is, And if you're into that, you should go 0:17:00.600 --> 0:17:03.440 listen to her how the space race worked episode that 0:17:03.520 --> 0:17:06.119 was a good one because Russia was advanced too. But 0:17:06.200 --> 0:17:10.680 these photos sent back from the Soviets showed that the 0:17:10.720 --> 0:17:13.119 far side of the moon didn't look anything like the 0:17:13.200 --> 0:17:15.240 near side of the moon that we see. It was 0:17:15.280 --> 0:17:17.960 all just little pockmark craters. There weren't any like sea 0:17:17.960 --> 0:17:21.040 of tranquility or anything like that. And for a long 0:17:21.080 --> 0:17:24.800 time it posed this this riddle called the lunar far 0:17:24.920 --> 0:17:28.720 side Highlands problem. Why was the far side of the 0:17:28.720 --> 0:17:31.800 Moon so different from the near side. So they finally 0:17:31.840 --> 0:17:34.320 recently think that they came up with the riddle, like recently, 0:17:34.359 --> 0:17:37.840 like this year, um or the answer to the riddle. 0:17:38.119 --> 0:17:43.000 They came up with the riddle after But the the 0:17:43.040 --> 0:17:46.720 reason being that the side of the Moon, the near 0:17:46.800 --> 0:17:50.760 side that's closest to us, has been locked what's called 0:17:50.800 --> 0:17:53.239 tidally locked. It's the whole reason that we have this 0:17:53.280 --> 0:17:55.879 whole why this whole podcast is going on. Because the 0:17:55.880 --> 0:17:58.520 Moon and the Earth are locked into orbit, right, and 0:17:58.600 --> 0:18:01.920 because they effect one another through gravity, decide that's closest 0:18:01.920 --> 0:18:07.920 to Earth, um was subject to Earth's gravity more than 0:18:07.960 --> 0:18:11.920 the other side. So as the Moon cooled and the 0:18:11.960 --> 0:18:15.160 Earth was cooling, but it was still super hot, it 0:18:15.240 --> 0:18:17.600 was heating the side of the Moon that was closest 0:18:17.640 --> 0:18:20.000 to us, right, that makes sense. So on the far side, 0:18:20.280 --> 0:18:23.520 as the Moon cooled, the crust was thicker and sturdier. 0:18:24.160 --> 0:18:27.159 On the near side the crust is a little thinner. 0:18:27.640 --> 0:18:30.560 So as the Moon was still cooling, it got blasted 0:18:30.600 --> 0:18:34.240 with asteroids and meteorites and all that jazz. And on 0:18:34.280 --> 0:18:37.240 the side that's closest to us, the thinner crust side, 0:18:38.080 --> 0:18:42.520 lava float up from those meteor impacts and formed things 0:18:42.520 --> 0:18:45.080 like the Sea of Tranquility. On the other side, the 0:18:45.119 --> 0:18:48.600 crust was thicker, so no lava flowed up from it. Interesting, 0:18:49.080 --> 0:18:51.399 that's what they have to explain it. I wonder if 0:18:51.400 --> 0:18:54.320 there's any value in exploring the far side of the Moon, 0:18:55.840 --> 0:18:58.600 or if that would just make a great movie. I mean, 0:18:58.640 --> 0:19:01.080 they're they're talking about to mean that. I don't know 0:19:01.119 --> 0:19:03.840 what the value is though. Yeah, and with the way 0:19:03.920 --> 0:19:06.439 that funding is we've talked about with NASA's going, I 0:19:06.480 --> 0:19:08.919 doubt if it's a priority, but that would make a 0:19:08.920 --> 0:19:11.600 good movie because one creepy thing about it. It made 0:19:11.600 --> 0:19:15.280 me think of space movies and such as that you 0:19:15.359 --> 0:19:18.080 lose radio contact on the far side of the Moon, 0:19:18.800 --> 0:19:21.840 so the movie version, obviously you would have to sign 0:19:21.920 --> 0:19:24.960 off and go dark for a period of time, and 0:19:25.000 --> 0:19:29.000 that's when like the event horizon occurs. What was the well, 0:19:29.040 --> 0:19:32.520 the event horizon, that's like, yeah, that's not the real thing. 0:19:32.880 --> 0:19:35.720 Sam Neil goes crazy. Yeah, something happens creepy on that 0:19:35.760 --> 0:19:39.480 other side, right, was that in that movie Moon with 0:19:39.520 --> 0:19:43.600 the Sam Rockwell, what the far side of the moon? Yeah? 0:19:43.720 --> 0:19:46.240 What was the movie where the guys like racing to 0:19:46.320 --> 0:19:49.919 get out of the um nightfall on the moon? Because 0:19:49.960 --> 0:19:55.040 like the sunrise? I think that was Moon. Okay, but 0:19:55.160 --> 0:19:57.160 we'll hear about it if it's not. I like that movie. 0:19:57.200 --> 0:20:00.000 That's a good one, fantastic. Yeah. I think David Bowie 0:20:00.040 --> 0:20:04.840 soun directed that. Yeah, Duncan Bowie his name, it's Duncan something. 0:20:05.040 --> 0:20:07.400 Oh he took because David Bowie's not even his real name. 0:20:07.400 --> 0:20:09.760 Probably No, I don't think that. Zky start us right, 0:20:10.040 --> 0:20:12.360 Duncan started us to his name, and he's from the moon. 0:20:14.119 --> 0:20:18.200 Anything else I do? I have one more thing? Um, 0:20:18.240 --> 0:20:20.639 it turns out that we can see more than just 0:20:20.680 --> 0:20:24.400 the near side of the moon sometimes. All right, how's that? Well, 0:20:24.440 --> 0:20:27.160 because the orbit of the Moon around the Earth isn't 0:20:27.160 --> 0:20:31.200 a perfect circle, it's elliptical. Um, when it's furthest away, 0:20:31.359 --> 0:20:34.120 we can see an extra eight degrees of the eight 0:20:34.400 --> 0:20:37.640 of the eastern side. And when it's um no, when 0:20:37.640 --> 0:20:40.200 it's closest to us, I'm sorry, and then when it's 0:20:40.240 --> 0:20:43.040 further away, we can see an extra about eight degrees 0:20:43.080 --> 0:20:47.560 of the western side, And I think we didn't mention um. 0:20:47.600 --> 0:20:49.880 We said that if you if you stopped that tennis ball, 0:20:49.960 --> 0:20:52.480 we would see all sides of the Moon. But even 0:20:52.520 --> 0:20:54.000 if it fell out of sink a little bit and 0:20:54.000 --> 0:20:56.080 slowed down or sped up a little bit, we would 0:20:56.080 --> 0:20:59.200 see portions of the Moon that we've never seen before exactly. 0:20:59.240 --> 0:21:02.240 So this is why I'm like, we're you don't find 0:21:02.280 --> 0:21:05.119 it incredibly amazing that we're alive at a point in 0:21:05.200 --> 0:21:10.440 time when the Moon's rotational spin and it's orbit around 0:21:10.440 --> 0:21:13.919 Earth are completely the same? Who said that wasn't amazing? 0:21:14.720 --> 0:21:17.320 You don't think it's a coincidence. I don't. I think 0:21:17.400 --> 0:21:20.760 that's why. I think if that weren't true, then there 0:21:20.800 --> 0:21:24.159 wouldn't be Earth as we know it, right, Okay, so 0:21:24.280 --> 0:21:28.159 you subscribe to the anthropic principle. What's that? Well, it 0:21:28.240 --> 0:21:31.719 basically says that things are the way they are because 0:21:31.720 --> 0:21:34.840 we're here to observe them, and if they weren't the 0:21:34.840 --> 0:21:37.840 way that they are, then we wouldn't be it wouldn't 0:21:37.840 --> 0:21:40.560 be possible for us to be here to observe them. Yeah, 0:21:40.560 --> 0:21:42.320 I think I've never heard of that but I think 0:21:42.320 --> 0:21:45.440 that makes a lot of sense to me. What about you, 0:21:47.359 --> 0:21:50.560 I don't know. It kind of smacks of like intelligent 0:21:51.080 --> 0:21:55.080