WEBVTT 0 00:00:00.480 --> 00:00:03.160 Anna: Welcome to Astronomy Daily, your cosmic 1 00:00:03.160 --> 00:00:05.640 compass for the latest in space and science 2 00:00:05.640 --> 00:00:07.200 news. I'm Anna. 3 00:00:07.200 --> 00:00:09.680 Avery: And I'm Avery. We're thrilled to have you 4 00:00:09.680 --> 00:00:12.560 join us as we explore some truly remarkable 5 00:00:12.560 --> 00:00:13.200 discoveries. 6 00:00:13.200 --> 00:00:15.600 Avery: And fascinating updates from across the 7 00:00:15.600 --> 00:00:16.399 universe today. 8 00:00:16.800 --> 00:00:19.760 Anna: Indeed, Avery. Today we're diving 9 00:00:19.760 --> 00:00:22.160 into everything from the surprising 10 00:00:22.240 --> 00:00:24.880 discovery of life's building blocks in 11 00:00:24.880 --> 00:00:27.520 distant cosmic ice to a new 12 00:00:27.520 --> 00:00:30.080 quasi moon for Earth. And even 13 00:00:30.160 --> 00:00:33.160 debunking some viral meteor videos that have 14 00:00:33.160 --> 00:00:34.240 been making the rounds. 15 00:00:34.560 --> 00:00:37.360 Avery: It's going to be a packed show full of 16 00:00:37.360 --> 00:00:40.000 groundbreaking insights and the few cosmic 17 00:00:40.000 --> 00:00:42.519 curiosities that will make you look at the 18 00:00:42.519 --> 00:00:44.400 night sky a little differently. 19 00:00:44.720 --> 00:00:45.920 So let's get started. 20 00:00:46.480 --> 00:00:49.120 Anna: Let's kick things off with an incredible find 21 00:00:49.120 --> 00:00:51.960 from the James Webb Space Telescope. It's 22 00:00:51.960 --> 00:00:54.640 just detected the building blocks of life in 23 00:00:54.640 --> 00:00:57.290 cosmic ice way out in the Large 24 00:00:57.290 --> 00:00:58.410 Magellanic Cloud. 25 00:00:58.810 --> 00:01:01.530 Avery: Wow. Building blocks for life in 26 00:01:01.530 --> 00:01:04.530 ice. That's quite a headline, Anna. it 27 00:01:04.530 --> 00:01:06.450 sounds like something straight out of science 28 00:01:06.450 --> 00:01:06.890 fiction. 29 00:01:07.050 --> 00:01:09.370 Anna: It really is. They found large, 30 00:01:09.450 --> 00:01:12.450 complex organic molecules like acetic 31 00:01:12.450 --> 00:01:14.810 acid and ethanol, among others, 32 00:01:15.050 --> 00:01:17.530 frozen solid in what scientists call 33 00:01:17.850 --> 00:01:20.730 ice mantles around dust grains near 34 00:01:20.730 --> 00:01:23.230 a young star. This is a huge deal 35 00:01:23.470 --> 00:01:25.870 because it suggests that the fundamental 36 00:01:25.870 --> 00:01:28.190 ingredients for life can form much earlier 37 00:01:28.350 --> 00:01:31.040 and under a, wider range of conditions than 38 00:01:31.040 --> 00:01:33.800 we previously thought. Potentially in harsher 39 00:01:33.800 --> 00:01:34.640 environments, too. 40 00:01:34.990 --> 00:01:37.189 Avery: So it really expands our understanding of 41 00:01:37.189 --> 00:01:39.790 where and when life could potentially emerge. 42 00:01:40.030 --> 00:01:41.950 That's a significant shift in thinking. 43 00:01:42.190 --> 00:01:45.150 Anna: Exactly. And this isn't just any detection. 44 00:01:45.550 --> 00:01:48.510 It's actually the first time acetic acid has 45 00:01:48.510 --> 00:01:51.390 been found in space ice. And also 46 00:01:51.390 --> 00:01:54.170 the very first detection of ethanol, 47 00:01:54.410 --> 00:01:56.090 methyl formate and 48 00:01:56.250 --> 00:01:59.050 acetaldehyde in ice outside 49 00:01:59.290 --> 00:02:01.930 the Milky Way Galaxy. The specific 50 00:02:01.930 --> 00:02:04.170 location is Protostar 51 00:02:04.170 --> 00:02:06.970 ST6 in the Large Magellanic 52 00:02:06.970 --> 00:02:09.690 Cloud, which is about 160,000 53 00:02:09.690 --> 00:02:10.570 light years away. 54 00:02:11.050 --> 00:02:13.930 Avery: Fascinating. And the Large Magellanic 55 00:02:13.930 --> 00:02:16.490 Cloud is known for being a low metallicity 56 00:02:16.490 --> 00:02:18.890 environment, isn't it? Similar to the early 57 00:02:18.890 --> 00:02:21.290 universe? Which means these results could 58 00:02:21.290 --> 00:02:23.850 tell us a lot about how complex chemistry 59 00:02:23.850 --> 00:02:25.190 unfolded back then then. 60 00:02:25.430 --> 00:02:28.230 Anna: That's absolutely right, Avery. So this 61 00:02:28.230 --> 00:02:31.110 discovery really helps us understand complex 62 00:02:31.110 --> 00:02:33.950 chemistry in those primitive metal 63 00:02:33.950 --> 00:02:36.870 pore environments, giving us crucial clues 64 00:02:36.870 --> 00:02:39.510 about how life might have begun in our own 65 00:02:39.510 --> 00:02:42.510 galaxy too. Potentially much earlier than 66 00:02:42.510 --> 00:02:44.710 we thought. It's incredibly exciting. 67 00:02:45.110 --> 00:02:47.220 Avery: That's truly profound, Anna. it really makes 68 00:02:47.220 --> 00:02:49.380 you think about the ubiquity of life's 69 00:02:49.380 --> 00:02:49.820 potential. 70 00:02:50.580 --> 00:02:52.700 Speaking of groundbreaking science, our next 71 00:02:52.700 --> 00:02:54.900 story takes us to the intriguing world of 72 00:02:54.900 --> 00:02:57.620 neutrinos. Two major experiments, 73 00:02:57.860 --> 00:03:00.380 Nova in the US and T2K in 74 00:03:00.380 --> 00:03:03.340 Japan, are joining forces, combining 75 00:03:03.340 --> 00:03:05.340 their Data to tackle one of the biggest 76 00:03:05.340 --> 00:03:06.580 mysteries in physics. 77 00:03:06.820 --> 00:03:09.580 Anna: Oh, the neutrino experiments. That's a 78 00:03:09.580 --> 00:03:12.220 significant collaboration. I know they're 79 00:03:12.220 --> 00:03:15.060 looking into why matter dominates over 80 00:03:15.060 --> 00:03:17.220 antimatter in the early universe, right? 81 00:03:17.720 --> 00:03:18.840 That's a huge question. 82 00:03:19.240 --> 00:03:21.880 Avery: Precisely. That's the ultimate goal. 83 00:03:22.120 --> 00:03:24.400 They're trying to determine if neutrinos and 84 00:03:24.400 --> 00:03:27.080 antineutrinos behave asymmetrically, 85 00:03:27.240 --> 00:03:29.640 which could provide the missing piece in that 86 00:03:29.640 --> 00:03:32.200 puzzle. For those who might not know, 87 00:03:32.360 --> 00:03:34.840 neutrinos are these incredibly tiny, 88 00:03:35.080 --> 00:03:37.840 nearly massless subatomic particles that come 89 00:03:37.840 --> 00:03:40.520 in three flavors and have the peculiar 90 00:03:40.520 --> 00:03:43.440 ability to oscillate or change from 91 00:03:43.440 --> 00:03:45.560 one flavor to another as they travel. 92 00:03:45.820 --> 00:03:48.530 Anna: Mm. Right. Like cosmic chameleons, 93 00:03:48.690 --> 00:03:51.570 constantly shifting identities. And these 94 00:03:51.570 --> 00:03:53.970 experiments are massive, aren't they? 95 00:03:54.210 --> 00:03:56.690 Sending beams through hundreds of kilometers 96 00:03:56.690 --> 00:03:57.250 of rock. 97 00:03:57.570 --> 00:04:00.210 Avery: Absolutely massive. These experiments 98 00:04:00.210 --> 00:04:02.370 involve sending beams of neutrinos through 99 00:04:02.370 --> 00:04:04.610 hundreds of kilometers of Earth's crust. 100 00:04:04.930 --> 00:04:07.890 Nova spans 810 kilometers across the 101 00:04:07.890 --> 00:04:10.210 US while T2K covers 102 00:04:10.210 --> 00:04:12.800 295 kilometers in Japan. And 103 00:04:13.270 --> 00:04:16.030 to observe how they change, they're also 104 00:04:16.030 --> 00:04:17.990 still working on determining the neutrino 105 00:04:17.990 --> 00:04:20.510 mass ordering whether it's normal or 106 00:04:20.510 --> 00:04:21.270 inverted. 107 00:04:21.750 --> 00:04:24.310 Anna: So even with all that cutting edge technology 108 00:04:24.470 --> 00:04:27.190 and data, there are still fundamental 109 00:04:27.190 --> 00:04:29.670 properties of these elusive particles that 110 00:04:29.670 --> 00:04:31.510 scientists are trying to nail down. 111 00:04:31.990 --> 00:04:34.870 Avery: Exactly. But this combined effort From 112 00:04:34.870 --> 00:04:37.830 Nova and T2K is a huge step forward 113 00:04:37.910 --> 00:04:40.200 in refining those measurements. And 114 00:04:40.200 --> 00:04:42.680 thankfully, even larger next generation 115 00:04:42.680 --> 00:04:45.000 experiments like Dune, Hyper 116 00:04:45.000 --> 00:04:47.970 Kamiokande and Juno are, on the horizon, 117 00:04:48.130 --> 00:04:50.450 promising even more precise data that could 118 00:04:50.450 --> 00:04:53.370 finally crack this cosmic puzzle. It's an 119 00:04:53.370 --> 00:04:54.930 exciting time for particle physics. 120 00:04:55.409 --> 00:04:58.130 Anna: That's fascinating, Avery. And a testament to 121 00:04:58.130 --> 00:05:00.050 international scientific cooperation. 122 00:05:00.770 --> 00:05:03.290 Shifting gears now, how about a new 123 00:05:03.290 --> 00:05:06.080 celestial companion for Earth, at least for a 124 00:05:06.080 --> 00:05:09.000 few decades? NASA has confirmed a new 125 00:05:09.000 --> 00:05:11.240 quasi moon orbiting our planet until 126 00:05:11.400 --> 00:05:12.600 2083. 127 00:05:13.240 --> 00:05:15.400 Avery: A new quasi moon? That's an interesting 128 00:05:15.400 --> 00:05:17.160 distinction. So it's not 129 00:05:17.480 --> 00:05:20.040 gravitationally bound like our actual moon, 130 00:05:20.200 --> 00:05:22.680 but still considered a companion. Tell me 131 00:05:22.680 --> 00:05:23.000 more. 132 00:05:23.800 --> 00:05:26.680 Anna: Exactly. This object, designated 133 00:05:26.760 --> 00:05:28.524 asteroid 2025 134 00:05:28.756 --> 00:05:31.680 PN7, is about 18 to 135 00:05:31.680 --> 00:05:34.590 36 meters wide. It orbits the sun 136 00:05:34.830 --> 00:05:37.670 much like Earth, but does so in sync with 137 00:05:37.670 --> 00:05:40.390 us, almost as if it's running alongside us on 138 00:05:40.390 --> 00:05:42.910 the same track. It's what's known as an 139 00:05:42.910 --> 00:05:45.830 Argyna asteroid, which means its orbit 140 00:05:45.830 --> 00:05:48.630 is almost identical to Earth's. It's been 141 00:05:48.630 --> 00:05:51.470 accompanying earth for about 60 years already 142 00:05:51.790 --> 00:05:54.030 and is projected to stay with us until 143 00:05:54.110 --> 00:05:55.230 2083. 144 00:05:56.270 --> 00:05:58.550 Avery: So not a true moon in the traditional sense, 145 00:05:58.550 --> 00:06:01.390 but more like a very close cosmic dance 146 00:06:01.390 --> 00:06:04.210 partner. 60 years and continuing 147 00:06:04.210 --> 00:06:07.130 until 2083. That's pretty long term 148 00:06:07.130 --> 00:06:08.210 relationship For a. 149 00:06:08.210 --> 00:06:11.090 Anna: Temporary companion, it certainly is. 150 00:06:11.570 --> 00:06:14.090 Its closest approach to Earth is about 4 151 00:06:14.090 --> 00:06:16.770 million kilometers, which is still about 10 152 00:06:16.770 --> 00:06:19.570 times further than our actual moon. And its 153 00:06:19.570 --> 00:06:22.570 furthest is 17 million km. It 154 00:06:22.570 --> 00:06:25.170 was initially discovered by the Pan Starrs 155 00:06:25.170 --> 00:06:28.170 survey and then confirmed by JPL's Horizons 156 00:06:28.170 --> 00:06:30.790 data system. And these quasi moons 157 00:06:30.790 --> 00:06:33.710 aren't just fascinating curiosities. They can 158 00:06:33.710 --> 00:06:36.710 actually serve as excellent test zones for 159 00:06:36.710 --> 00:06:39.430 spacecraft navigation, Robot mining 160 00:06:39.430 --> 00:06:42.030 operations, or even for deep space 161 00:06:42.030 --> 00:06:44.030 communications technologies in the future. 162 00:06:44.670 --> 00:06:46.670 Avery: That's a fantastic point. They're like 163 00:06:46.750 --> 00:06:48.950 natural proving grounds for future space 164 00:06:48.950 --> 00:06:51.430 exploration. It's amazing how many hidden 165 00:06:51.430 --> 00:06:53.310 treasures Are still out there, Even in our 166 00:06:53.310 --> 00:06:54.590 own cosmic backyard. 167 00:06:55.400 --> 00:06:57.720 And speaking of cosmic backyard, let's now 168 00:06:57.720 --> 00:06:59.520 turn our attention to something that really 169 00:06:59.520 --> 00:07:02.360 makes you think about cosmic evolution on a 170 00:07:02.360 --> 00:07:05.080 grand scale. How a galaxy's age 171 00:07:05.160 --> 00:07:07.640 determines what type of planets it can form. 172 00:07:08.600 --> 00:07:10.489 Anna: Oh, the metallicity research by Jason 173 00:07:10.489 --> 00:07:13.250 Steffen. I read about that. It's such an 174 00:07:13.250 --> 00:07:16.010 interesting concept that the very composition 175 00:07:16.010 --> 00:07:18.490 of planets changes over cosmic time. 176 00:07:19.130 --> 00:07:21.860 Avery: Exactly. This new research from Jason Steffen 177 00:07:21.860 --> 00:07:24.500 at the University of Nevada, Las Vegas, Dives 178 00:07:24.500 --> 00:07:27.340 deep into how metallicity, which is 179 00:07:27.340 --> 00:07:30.100 the abundance of elements heavier than 180 00:07:30.100 --> 00:07:32.980 hydrogen and helium, Rises in a galaxy 181 00:07:33.220 --> 00:07:35.780 as stars live, die, and 182 00:07:36.019 --> 00:07:38.780 enrich the interstellar medium. What he 183 00:07:38.780 --> 00:07:41.020 found is that different types of rocky 184 00:07:41.020 --> 00:07:44.020 planets form as this metallicity changes 185 00:07:44.100 --> 00:07:44.820 over time. 186 00:07:45.950 --> 00:07:48.790 Anna: So older rocky planets are less dense Than 187 00:07:48.790 --> 00:07:50.990 younger ones like Earth. That seems 188 00:07:50.990 --> 00:07:52.830 counterintuitive when you first hear it. 189 00:07:53.150 --> 00:07:56.150 Avery: It does, but it makes perfect sense when you 190 00:07:56.150 --> 00:07:58.790 consider the elements available. Early high 191 00:07:58.790 --> 00:08:01.470 mass stars produce lighter elements like 192 00:08:01.549 --> 00:08:04.350 oxygen, silicon and magnesium, which 193 00:08:04.350 --> 00:08:06.910 primarily make up the outer layers and crusts 194 00:08:06.910 --> 00:08:09.310 of rocky planets. Later on, 195 00:08:09.630 --> 00:08:12.630 lower mass stars live longer and produce more 196 00:08:12.630 --> 00:08:15.450 iron and nickel, and which formed the larger, 197 00:08:15.450 --> 00:08:17.970 denser cores we see in younger planets like 198 00:08:17.970 --> 00:08:18.370 Earth. 199 00:08:19.660 --> 00:08:22.660 Anna: So the ingredients for denser cores Became 200 00:08:22.660 --> 00:08:24.860 more abundant later in galactic history. 201 00:08:25.420 --> 00:08:27.900 And his research also mentioned that those 202 00:08:27.900 --> 00:08:30.540 early planets with higher magnesium to 203 00:08:30.540 --> 00:08:33.060 silicon ratios Might have had thicker 204 00:08:33.060 --> 00:08:35.460 crusts, Potentially inhibiting plate 205 00:08:35.460 --> 00:08:36.140 tectonics. 206 00:08:37.100 --> 00:08:39.020 Avery: That's a crucial point for habitability. 207 00:08:39.100 --> 00:08:41.900 Plate tectonics is believed to be vital for 208 00:08:42.220 --> 00:08:44.540 regulating a planet's climate and supporting 209 00:08:44.540 --> 00:08:47.350 life. It's if the iron content was 210 00:08:47.350 --> 00:08:50.190 lower earlier in the Milky Way's history, as 211 00:08:50.190 --> 00:08:52.790 the study suggests, Then habitability might 212 00:08:52.790 --> 00:08:55.470 actually be more likely later in a 213 00:08:55.470 --> 00:08:58.270 galaxy's lifetime. It really highlights how 214 00:08:58.270 --> 00:09:00.310 the timing of these elemental ingredients 215 00:09:00.310 --> 00:09:02.990 Plays a crucial role in planet formation and 216 00:09:02.990 --> 00:09:03.510 evolution. 217 00:09:03.910 --> 00:09:06.630 Anna: So essentially, Earth could 218 00:09:06.630 --> 00:09:08.630 be a relatively young 219 00:09:08.950 --> 00:09:11.470 habitable world in the grand scheme of the 220 00:09:11.470 --> 00:09:14.110 universe, Simply because the right mix of 221 00:09:14.110 --> 00:09:16.910 elements wasn't available earlier. But that's 222 00:09:16.910 --> 00:09:19.750 a profound thought that truly puts our 223 00:09:19.750 --> 00:09:22.550 planet's existence into a broader cosmic 224 00:09:22.550 --> 00:09:23.830 context. Avery. 225 00:09:24.230 --> 00:09:27.030 Now for our final story today, let's 226 00:09:27.110 --> 00:09:29.670 lighten the mood with a bit of a space 227 00:09:29.670 --> 00:09:32.470 mystery that's been debunked. It's about when 228 00:09:32.549 --> 00:09:35.190 a double fireball is, in fact, 229 00:09:35.830 --> 00:09:37.350 not a double fireball. 230 00:09:37.670 --> 00:09:40.470 Avery: Oh, the double fireballs. I saw 231 00:09:40.470 --> 00:09:42.310 some of those videos circulating online 232 00:09:42.470 --> 00:09:45.400 around October 16th and 17th, and they were 233 00:09:45.400 --> 00:09:47.400 pretty compelling, showing what looked like 234 00:09:47.400 --> 00:09:49.880 two bright meteors streaking across the sky 235 00:09:49.880 --> 00:09:52.720 over the Eastern Seaboard, U.S. they 236 00:09:52.720 --> 00:09:53.680 definitely were. 237 00:09:53.680 --> 00:09:56.560 Anna: But Robert Lunsford, a fireball expert 238 00:09:56.560 --> 00:09:59.080 from the American Meteor Society, has 239 00:09:59.080 --> 00:10:01.280 explained that these aren't actually two 240 00:10:01.280 --> 00:10:03.800 separate meteors, but rather an optical 241 00:10:03.800 --> 00:10:04.360 illusion. 242 00:10:04.600 --> 00:10:07.280 Avery: Really, an optical illusion. What 243 00:10:07.280 --> 00:10:09.600 creates that effect? That's quite surprising 244 00:10:09.600 --> 00:10:11.560 given how clear some of the footage was. 245 00:10:12.160 --> 00:10:14.760 Anna: It turns out it's caused by anti fogging 246 00:10:14.760 --> 00:10:17.600 measures on some sky watching camera systems. 247 00:10:17.760 --> 00:10:20.320 These cameras are often housed under clear 248 00:10:20.320 --> 00:10:22.920 acrylic domes, and the anti fogging 249 00:10:22.920 --> 00:10:25.560 mechanisms can create a secondary reflection 250 00:10:25.560 --> 00:10:27.999 or image of any bright light source. 251 00:10:28.400 --> 00:10:31.280 The key giveaway, according to Lunsford, is 252 00:10:31.280 --> 00:10:33.880 that the secondary fireball is always in the 253 00:10:33.880 --> 00:10:36.880 exact same place relative to the main event. 254 00:10:37.430 --> 00:10:39.860 Avery: ah, a classic trick of the light then. 255 00:10:40.260 --> 00:10:42.300 So if you're ever scrolling through social 256 00:10:42.300 --> 00:10:45.140 media and see videos of double fireballs, 257 00:10:45.140 --> 00:10:47.540 it's almost certainly an artifact of the 258 00:10:47.540 --> 00:10:50.300 camera setup, not a spectacular dual 259 00:10:50.300 --> 00:10:51.300 meteor shower. 260 00:10:51.940 --> 00:10:54.260 Anna: Precisely. Good to know, right? 261 00:10:54.820 --> 00:10:56.780 Saves us all from getting too excited about 262 00:10:56.780 --> 00:10:58.100 phantom space rocks. 263 00:10:58.660 --> 00:11:01.220 Avery: And that wraps up another incredible episode 264 00:11:01.220 --> 00:11:04.140 of Astronomy Daily. What a journey we've had 265 00:11:04.140 --> 00:11:06.460 today. From the origins of life's building 266 00:11:06.460 --> 00:11:09.140 blocks and to the mysteries of neutrinos and 267 00:11:09.140 --> 00:11:11.100 celestial optical illusions. 268 00:11:11.660 --> 00:11:14.380 Anna: It certainly was Avery. Each 269 00:11:14.380 --> 00:11:17.100 story really highlighted the vastness 270 00:11:17.100 --> 00:11:19.860 and wonder of our universe and the 271 00:11:19.860 --> 00:11:22.220 incredible work being done to understand it 272 00:11:22.220 --> 00:11:22.540 better. 273 00:11:23.180 --> 00:11:25.100 Avery: Thank you all for joining us on this 274 00:11:25.100 --> 00:11:27.420 astronomical adventure. We hope you've 275 00:11:27.420 --> 00:11:29.740 enjoyed these updates as much as we enjoyed 276 00:11:29.740 --> 00:11:30.700 bringing them to you. 277 00:11:31.180 --> 00:11:33.620 Anna: You can find us again tomorrow right here on 278 00:11:33.620 --> 00:11:36.300 Astronomy Daily. Until then, keep looking 279 00:11:36.300 --> 00:11:37.940 up. I'm Anna. 280 00:11:38.260 --> 00:11:39.460 Avery: And I'm Avery. 281 00:11:39.460 --> 00:11:40.580 Avery: Clear skies, everyone.