1 00:00:00,000 --> 00:00:03,280 Okay, so are we alone in the universe? 2 00:00:03,280 --> 00:00:05,300 It's like the biggest question out there, right? 3 00:00:05,300 --> 00:00:06,640 I mean, you look up at the night sky 4 00:00:06,640 --> 00:00:07,880 and can't help but wonder. 5 00:00:07,880 --> 00:00:10,920 And for centuries, it was pure speculation. 6 00:00:10,920 --> 00:00:13,680 But now we've got a tool to at least try 7 00:00:13,680 --> 00:00:15,020 to tackle that question. 8 00:00:15,020 --> 00:00:15,860 Wait, really? 9 00:00:15,860 --> 00:00:18,080 Like an actual equation that tells us 10 00:00:18,080 --> 00:00:19,520 if there are aliens out there. 11 00:00:19,520 --> 00:00:20,360 Not quite. 12 00:00:20,360 --> 00:00:21,800 It's called the Drake equation, 13 00:00:21,800 --> 00:00:24,320 and it's more about framing the discussion, 14 00:00:24,320 --> 00:00:25,880 thinking about the probability. 15 00:00:25,880 --> 00:00:29,000 Okay, so not a magic formula that spits out a number, 16 00:00:29,000 --> 00:00:30,920 but a way to kind of break down the problem. 17 00:00:30,920 --> 00:00:33,160 Exactly, a way to organize our thoughts 18 00:00:33,160 --> 00:00:35,120 about what it would take for another 19 00:00:35,120 --> 00:00:38,320 intelligent, communicating civilization to exist. 20 00:00:38,320 --> 00:00:39,160 Makes sense. 21 00:00:39,160 --> 00:00:41,520 Instead of just aliens exist or they don't, 22 00:00:41,520 --> 00:00:44,120 we get to explore the how likely is it. 23 00:00:44,120 --> 00:00:46,720 Right, and to do that, we look at different factors. 24 00:00:46,720 --> 00:00:49,040 Each factor is a variable in the equation. 25 00:00:49,040 --> 00:00:52,480 Welcome to Cosmos in a Pod, Space and Astronomy series. 26 00:00:52,480 --> 00:00:53,600 All right, lay it on me. 27 00:00:53,600 --> 00:00:56,040 What are these variables, these ingredients 28 00:00:56,040 --> 00:00:58,120 in the recipe for alien life? 29 00:00:58,120 --> 00:01:00,080 Well, first we gotta start with stars, 30 00:01:00,080 --> 00:01:03,680 specifically the rate of star formation in our galaxy. 31 00:01:03,680 --> 00:01:05,240 We represent that with R. 32 00:01:05,240 --> 00:01:08,640 So like how many new stars are popping up each year? 33 00:01:08,640 --> 00:01:10,780 Because new stars mean new planets, right? 34 00:01:10,780 --> 00:01:11,840 Maybe some with life. 35 00:01:11,840 --> 00:01:14,820 Exactly, and the current estimates suggest 36 00:01:14,820 --> 00:01:18,880 it's about one to three new stars per year in the Milky Way. 37 00:01:18,880 --> 00:01:20,920 Wow, okay, so that's a lot of potential 38 00:01:20,920 --> 00:01:23,080 new solar systems forming out there. 39 00:01:23,080 --> 00:01:24,120 What's next? 40 00:01:24,120 --> 00:01:26,000 Next, we consider FP. 41 00:01:26,000 --> 00:01:27,580 That's the fraction of those stars 42 00:01:27,580 --> 00:01:29,520 that actually have planets orbiting them. 43 00:01:29,520 --> 00:01:32,040 So out of all those brand new stars, 44 00:01:32,040 --> 00:01:33,760 how many have a planetary posse? 45 00:01:33,760 --> 00:01:36,320 Turns out planets might be more common than we thought. 46 00:01:36,320 --> 00:01:37,980 Missions like Kepler have shown us 47 00:01:37,980 --> 00:01:41,200 that planets seem to be the rule, not the exception. 48 00:01:41,200 --> 00:01:43,760 So FP is likely close to one, 49 00:01:43,760 --> 00:01:47,240 meaning almost every star probably has at least one planet. 50 00:01:47,240 --> 00:01:48,560 Hold on, you're telling me there could be 51 00:01:48,560 --> 00:01:51,680 billions of planets just in our galaxy alone? 52 00:01:51,680 --> 00:01:53,000 My mind is blown. 53 00:01:53,000 --> 00:01:55,300 But not every planet can support life, right? 54 00:01:55,300 --> 00:01:56,640 Gotta be in the right spot. 55 00:01:56,640 --> 00:01:57,600 You got it. 56 00:01:57,600 --> 00:01:58,840 That brings us to NEH, 57 00:01:58,840 --> 00:02:00,240 which is the average number of 58 00:02:00,240 --> 00:02:02,440 habitable planets per star system. 59 00:02:02,440 --> 00:02:04,000 Ah, the Goldilocks zone. 60 00:02:04,000 --> 00:02:05,240 Not too hot, not too cold, 61 00:02:05,240 --> 00:02:07,280 just right for liquid water and all that. 62 00:02:07,280 --> 00:02:08,520 Precisely. 63 00:02:08,520 --> 00:02:10,160 But figuring out how many planets 64 00:02:10,160 --> 00:02:12,080 are actually in those habitable zones? 65 00:02:12,080 --> 00:02:13,200 Well, that's tricky. 66 00:02:13,200 --> 00:02:17,140 Estimates range from 0.1 to one habitable planet per star. 67 00:02:17,140 --> 00:02:20,000 Okay, so even with billions of planets, 68 00:02:20,000 --> 00:02:23,400 only a fraction might be suitable for life as we know it. 69 00:02:23,400 --> 00:02:27,000 But let's say we do have a planet with the right conditions. 70 00:02:27,000 --> 00:02:29,480 What are the chances life actually starts there? 71 00:02:29,480 --> 00:02:30,960 That's where FULL comes in. 72 00:02:30,960 --> 00:02:32,760 The fraction of those habitable planets 73 00:02:32,760 --> 00:02:34,480 where life actually arises. 74 00:02:34,480 --> 00:02:36,060 And this is one of the biggest unknowns 75 00:02:36,060 --> 00:02:37,160 in the whole equation. 76 00:02:37,160 --> 00:02:38,180 Yeah, I can see why. 77 00:02:38,180 --> 00:02:42,040 Going from non-living stuff to even the simplest life form, 78 00:02:42,040 --> 00:02:43,120 that's a huge jump. 79 00:02:43,120 --> 00:02:45,080 Right, we only have Earth as an example, 80 00:02:45,080 --> 00:02:48,080 and we still don't fully understand how life began here. 81 00:02:48,080 --> 00:02:50,040 So applying that to other planets is tough. 82 00:02:50,040 --> 00:02:52,020 So life emerging could be super common, 83 00:02:52,020 --> 00:02:54,800 or it could be a one-time fluke right here on Earth. 84 00:02:54,800 --> 00:02:56,400 But let's play what if. 85 00:02:56,400 --> 00:02:58,560 Say life does emerge on a planet. 86 00:02:58,560 --> 00:03:00,660 Do we just assume intelligent beings pop up 87 00:03:00,660 --> 00:03:02,120 and start building spaceships? 88 00:03:02,120 --> 00:03:03,040 Not so fast. 89 00:03:03,040 --> 00:03:04,460 That's where PHI comes in. 90 00:03:04,460 --> 00:03:05,920 The fraction of planets with life 91 00:03:05,920 --> 00:03:07,640 where intelligent life evolves. 92 00:03:07,640 --> 00:03:09,640 Again, Earth is our only data point. 93 00:03:09,640 --> 00:03:12,840 Right, we don't exactly have a bunch of alien civilizations 94 00:03:12,840 --> 00:03:14,000 to compare notes with. 95 00:03:14,000 --> 00:03:15,200 Big assumptions here. 96 00:03:15,200 --> 00:03:16,400 Huge. 97 00:03:16,400 --> 00:03:18,040 We don't know if intelligence like ours 98 00:03:18,040 --> 00:03:20,200 is inevitable or incredibly rare. 99 00:03:20,200 --> 00:03:22,400 Maybe most life stays microscopic, 100 00:03:22,400 --> 00:03:24,680 or maybe there are other paths to intelligence 101 00:03:24,680 --> 00:03:26,160 we haven't even thought of. 102 00:03:26,160 --> 00:03:28,040 So even if life is abundant, 103 00:03:28,040 --> 00:03:30,440 intelligence could be the bottleneck. 104 00:03:30,440 --> 00:03:33,280 But let's imagine on some planets, 105 00:03:33,280 --> 00:03:36,340 brainy life forms DO evolve. 106 00:03:36,340 --> 00:03:37,480 What's the next step? 107 00:03:37,480 --> 00:03:38,480 Communication. 108 00:03:38,480 --> 00:03:42,680 That's FBSE, the fraction of intelligent civilizations 109 00:03:42,680 --> 00:03:45,160 that develop technology that can send signals 110 00:03:45,160 --> 00:03:46,720 we could detect. 111 00:03:46,720 --> 00:03:48,860 Ah, so they're not just thinking deep thoughts, 112 00:03:48,860 --> 00:03:50,680 they're broadcasting their presence. 113 00:03:50,680 --> 00:03:52,760 Radio waves, lasers, stuff like that. 114 00:03:52,760 --> 00:03:54,240 But that assumes they want to communicate 115 00:03:54,240 --> 00:03:56,060 and that their tech is something we can even pick up. 116 00:03:56,060 --> 00:03:58,380 Absolutely, maybe some choose not to broadcast, 117 00:03:58,380 --> 00:03:59,960 or maybe their tech is so advanced, 118 00:03:59,960 --> 00:04:01,960 it just looks like background noise to us. 119 00:04:01,960 --> 00:04:03,960 Kind of humbling to think we could be missing signals 120 00:04:03,960 --> 00:04:05,400 because we're not listening the right way. 121 00:04:05,400 --> 00:04:06,440 It's a real possibility. 122 00:04:06,440 --> 00:04:08,200 And even if they do send a signal, 123 00:04:08,200 --> 00:04:10,800 there's one last variable to consider, L. 124 00:04:10,800 --> 00:04:14,520 Okay, what's L stand for in this cosmic equation? 125 00:04:14,520 --> 00:04:17,480 The length of time a civilization remains detectable. 126 00:04:17,480 --> 00:04:19,000 So how long they're sending out those signals? 127 00:04:19,000 --> 00:04:22,440 Right, could be decades, centuries, millions of years. 128 00:04:22,440 --> 00:04:24,640 Depends on their technology, if they survive, 129 00:04:24,640 --> 00:04:25,820 all sorts of things. 130 00:04:25,820 --> 00:04:27,440 I'm seeing how all these variables, 131 00:04:27,440 --> 00:04:29,680 these possibilities are piling up. 132 00:04:29,680 --> 00:04:34,000 Each step in the equation adds another layer of what ifs. 133 00:04:34,000 --> 00:04:36,320 It highlights just how vast and complex 134 00:04:36,320 --> 00:04:39,080 this question of are we alone really is. 135 00:04:39,080 --> 00:04:40,880 My head is spinning already. 136 00:04:40,880 --> 00:04:43,400 But before we get lost in the vastness, 137 00:04:43,400 --> 00:04:46,400 does the Drake equation give us an actual number 138 00:04:46,400 --> 00:04:49,240 for how many alien civilizations might be out there? 139 00:04:49,240 --> 00:04:52,560 It can, but that's where things get really interesting. 140 00:04:52,560 --> 00:04:54,640 So you're asking if the Drake equation 141 00:04:54,640 --> 00:04:55,960 actually gives us a number. 142 00:04:55,960 --> 00:04:58,200 Yeah, like does it spit out, I don't know, 143 00:04:58,200 --> 00:05:00,120 even a rough estimate? 144 00:05:00,120 --> 00:05:01,520 Or is it more of a thought experiment? 145 00:05:01,520 --> 00:05:03,080 Well, it can give a number, 146 00:05:03,080 --> 00:05:05,200 but the thing is that number can be all over the place 147 00:05:05,200 --> 00:05:07,520 depending on what you plug in for each variable. 148 00:05:07,520 --> 00:05:09,440 Okay, I'm starting to see the problem. 149 00:05:09,440 --> 00:05:12,400 So many unknowns, even our best guesses 150 00:05:12,400 --> 00:05:14,720 for some of those variables could be totally wrong. 151 00:05:14,720 --> 00:05:18,160 Exactly, if you use really optimistic estimates 152 00:05:18,160 --> 00:05:21,440 for every variable, like tons of stars forming, 153 00:05:21,440 --> 00:05:24,920 loads of habitable planets, life popping up left and right, 154 00:05:24,920 --> 00:05:26,440 you might end up with millions, 155 00:05:26,440 --> 00:05:28,920 millions of civilizations in our galaxy alone. 156 00:05:28,920 --> 00:05:30,320 Millions, seriously? 157 00:05:30,320 --> 00:05:34,840 And that's wild, but also probably not very likely, right? 158 00:05:34,840 --> 00:05:36,880 Probably not, but on the flip side, 159 00:05:36,880 --> 00:05:38,840 if you go with really pessimistic estimates, 160 00:05:38,840 --> 00:05:40,960 you might end up with a number as low as one, 161 00:05:40,960 --> 00:05:42,840 meaning, well, it's just us. 162 00:05:42,840 --> 00:05:45,080 Whoa, okay, that's the other extreme, 163 00:05:45,080 --> 00:05:46,160 a little lonely out here, 164 00:05:46,160 --> 00:05:48,720 but kind of on-spiring in a weird way. 165 00:05:48,720 --> 00:05:51,360 So what's a more realistic range then? 166 00:05:51,360 --> 00:05:53,520 Most scientists who work with the Drake equation 167 00:05:53,520 --> 00:05:56,000 would probably say somewhere between 10 and 10,000, 168 00:05:56,000 --> 00:05:58,200 still a huge range, but narrows it down a bit. 169 00:05:58,200 --> 00:06:01,480 10 to 10,000, even at the low end, that's mind blowing. 170 00:06:01,480 --> 00:06:03,800 Makes you wonder if there are at least a few others out there, 171 00:06:03,800 --> 00:06:05,040 why haven't we found them? 172 00:06:05,040 --> 00:06:07,560 Ah, yes, the Fermi paradox. 173 00:06:07,560 --> 00:06:09,040 The numbers suggest there should be plenty 174 00:06:09,040 --> 00:06:11,560 of other civilizations, but we see no evidence. 175 00:06:11,560 --> 00:06:12,840 Okay, so we've got this equation 176 00:06:12,840 --> 00:06:15,080 that helps us think about the possibilities. 177 00:06:15,080 --> 00:06:16,880 But then we hit this paradox, 178 00:06:16,880 --> 00:06:19,160 where the math hints we shouldn't be alone, 179 00:06:19,160 --> 00:06:20,120 yet here we are. 180 00:06:21,520 --> 00:06:23,000 It's kind of messing with my brain. 181 00:06:23,000 --> 00:06:26,080 It is a puzzle, for sure, and it's sparked a lot of ideas 182 00:06:26,080 --> 00:06:27,640 about why we haven't made contact. 183 00:06:27,640 --> 00:06:29,920 All right, let's hear those ideas. 184 00:06:29,920 --> 00:06:31,760 What are some theories about why we haven't bumped 185 00:06:31,760 --> 00:06:33,800 into our galactic neighbors yet? 186 00:06:33,800 --> 00:06:36,160 Well, one possibility is that interstellar travel 187 00:06:36,160 --> 00:06:38,280 is just way harder than we think. 188 00:06:38,280 --> 00:06:40,800 The distances between stars are massive, 189 00:06:40,800 --> 00:06:44,000 and keeping life sustained across those stretches of space. 190 00:06:45,280 --> 00:06:47,320 Even for super advanced civilizations, 191 00:06:47,320 --> 00:06:48,640 it might be impossible. 192 00:06:48,640 --> 00:06:49,640 So even if they're out there, 193 00:06:49,640 --> 00:06:51,040 they could be stuck on their own planets, 194 00:06:51,040 --> 00:06:52,960 just like us, cosmic cabin fever. 195 00:06:52,960 --> 00:06:54,960 Or maybe they've cracked interstellar travel, 196 00:06:54,960 --> 00:06:56,760 but they're choosing to stay hidden. 197 00:06:56,760 --> 00:06:58,600 Like a galactic do not disturb sign. 198 00:06:58,600 --> 00:06:59,760 Exactly. 199 00:06:59,760 --> 00:07:02,800 Lots of reasons a civilization might avoid contact. 200 00:07:02,800 --> 00:07:04,320 Maybe they learned that interacting 201 00:07:04,320 --> 00:07:08,360 with less advanced species is messy or dangerous. 202 00:07:08,360 --> 00:07:12,000 Or maybe they have a strict don't interfere policy. 203 00:07:12,000 --> 00:07:12,840 I can see that. 204 00:07:12,840 --> 00:07:15,840 Plenty of sci-fi movies warn about first contact going wrong. 205 00:07:15,840 --> 00:07:17,120 Any other possibilities? 206 00:07:17,120 --> 00:07:20,360 Well, there's the always intriguing zoo hypothesis. 207 00:07:20,360 --> 00:07:22,680 The idea that we are being watched, 208 00:07:22,680 --> 00:07:25,040 but they're intentionally not making contact. 209 00:07:25,040 --> 00:07:27,200 Like we're in a cosmic zoo. 210 00:07:27,200 --> 00:07:29,080 So they're watching our reality TV 211 00:07:29,080 --> 00:07:31,000 and judging our fashion choices. 212 00:07:31,000 --> 00:07:33,360 I can picture them placing bets on whether 213 00:07:33,360 --> 00:07:34,760 we'll make it to the next century. 214 00:07:34,760 --> 00:07:35,960 Who knows? 215 00:07:35,960 --> 00:07:38,120 But it does make you think about the ethics 216 00:07:38,120 --> 00:07:41,280 of just observing and the impact of contact, 217 00:07:41,280 --> 00:07:43,040 even accidental contact. 218 00:07:43,040 --> 00:07:45,520 OK, these are some wild theories. 219 00:07:45,520 --> 00:07:48,240 But what about the signals themselves? 220 00:07:48,240 --> 00:07:51,480 We assume they'd use tech like ours, radio waves and stuff. 221 00:07:51,480 --> 00:07:53,800 But maybe they moved on to something completely different, 222 00:07:53,800 --> 00:07:55,400 something we can't even detect. 223 00:07:55,400 --> 00:07:56,280 That's a great point. 224 00:07:56,280 --> 00:07:59,040 It's totally possible we're looking for the wrong things. 225 00:07:59,040 --> 00:08:00,840 Listen on the wrong frequencies. 226 00:08:00,840 --> 00:08:02,680 Maybe their technology is so advanced, 227 00:08:02,680 --> 00:08:04,440 it just looks like static to us. 228 00:08:04,440 --> 00:08:06,200 It's like that movie Contact, where the signal 229 00:08:06,200 --> 00:08:07,920 was hidden in prime numbers. 230 00:08:07,920 --> 00:08:10,480 You need a whole new way of thinking to even recognize it. 231 00:08:10,480 --> 00:08:11,160 Precisely. 232 00:08:11,160 --> 00:08:13,080 We're constantly challenged to rethink 233 00:08:13,080 --> 00:08:16,160 what technology might look like and how we could detect it. 234 00:08:16,160 --> 00:08:18,680 So even with all our searching, we 235 00:08:18,680 --> 00:08:21,240 could be missing a whole universe of signals 236 00:08:21,240 --> 00:08:24,160 because we haven't figured out how to listen properly yet. 237 00:08:24,160 --> 00:08:25,280 Kind of blows my mind. 238 00:08:25,280 --> 00:08:28,320 It really does highlight how much we still have to learn 239 00:08:28,320 --> 00:08:31,080 and the importance of staying open to new possibilities 240 00:08:31,080 --> 00:08:33,360 and pushing the boundaries of what we know. 241 00:08:33,360 --> 00:08:36,920 Speaking of pushing boundaries, what about those more far out 242 00:08:36,920 --> 00:08:38,000 ideas? 243 00:08:38,000 --> 00:08:40,960 Like I've heard of scientists searching for Dyson spheres. 244 00:08:40,960 --> 00:08:42,720 Sounds like something straight out of sci-fi. 245 00:08:42,720 --> 00:08:44,440 They do sound like science fiction, 246 00:08:44,440 --> 00:08:46,520 but the idea is pretty logical. 247 00:08:46,520 --> 00:08:50,400 A Dyson sphere is this hypothetical megastructure. 248 00:08:50,400 --> 00:08:53,040 Think, a civilization building something 249 00:08:53,040 --> 00:08:55,320 to capture the energy of an entire star. 250 00:08:55,320 --> 00:08:57,240 Wait, they're talking about building something 251 00:08:57,240 --> 00:08:58,760 that surrounds a whole star. 252 00:08:58,760 --> 00:09:00,120 How is that even possible? 253 00:09:00,120 --> 00:09:03,000 It would be an incredible feat of engineering, no doubt. 254 00:09:03,000 --> 00:09:04,600 Wouldn't have to be a solid sphere, 255 00:09:04,600 --> 00:09:08,560 more like a swarm of satellites or solar panels orbiting 256 00:09:08,560 --> 00:09:10,120 the star collecting its energy. 257 00:09:10,120 --> 00:09:11,800 OK, I can kind of picture it. 258 00:09:11,800 --> 00:09:13,480 But why go through all that trouble? 259 00:09:13,480 --> 00:09:14,760 Energy. 260 00:09:14,760 --> 00:09:16,960 As civilizations become more advanced, 261 00:09:16,960 --> 00:09:19,400 they need more and more energy. 262 00:09:19,400 --> 00:09:22,800 A Dyson sphere lets them tap into a star's power, 263 00:09:22,800 --> 00:09:25,760 giving them enough energy for potentially millions of years. 264 00:09:25,760 --> 00:09:28,160 Talk about thinking big. 265 00:09:28,160 --> 00:09:30,800 But if these things are so massive, wouldn't we see them? 266 00:09:30,800 --> 00:09:32,120 Theoretically, yes. 267 00:09:32,120 --> 00:09:34,680 A Dyson sphere would block some of the star's light, 268 00:09:34,680 --> 00:09:36,160 making it look dimmer. 269 00:09:36,160 --> 00:09:39,640 And it would give off waste heat as infrared radiation, something 270 00:09:39,640 --> 00:09:41,360 we could detect with telescopes. 271 00:09:41,360 --> 00:09:44,120 So we're looking for stars that are acting weird, dimming, 272 00:09:44,120 --> 00:09:45,840 or giving off unusual heat. 273 00:09:45,840 --> 00:09:46,880 Exactly. 274 00:09:46,880 --> 00:09:48,720 And while we haven't found definitive proof 275 00:09:48,720 --> 00:09:51,640 of Dyson spheres yet, it's an exciting area of research 276 00:09:51,640 --> 00:09:53,680 that really stretches our imagination 277 00:09:53,680 --> 00:09:55,880 and our technological capabilities. 278 00:09:55,880 --> 00:09:57,040 This is all incredible. 279 00:09:57,040 --> 00:09:58,960 It makes you realize we might be just scratching 280 00:09:58,960 --> 00:10:00,280 the surface of what's out there. 281 00:10:00,280 --> 00:10:01,400 We absolutely are. 282 00:10:01,400 --> 00:10:03,920 And that's what makes the search for extraterrestrial life 283 00:10:03,920 --> 00:10:05,480 so captivating. 284 00:10:05,480 --> 00:10:07,760 It's a constant journey of discovery, 285 00:10:07,760 --> 00:10:10,920 challenging our assumptions, and expanding our understanding 286 00:10:10,920 --> 00:10:12,000 of the universe. 287 00:10:12,000 --> 00:10:15,120 OK, so we've talked about why we haven't found aliens yet 288 00:10:15,120 --> 00:10:17,360 and some of the amazing things we might be missing. 289 00:10:17,360 --> 00:10:22,120 But what if we did find evidence of another civilization? 290 00:10:22,120 --> 00:10:23,760 What would that mean for us? 291 00:10:23,760 --> 00:10:25,560 How would it change our view of ourselves 292 00:10:25,560 --> 00:10:27,200 and our place in the universe? 293 00:10:27,200 --> 00:10:30,440 That's a big question, one we've pondered for ages. 294 00:10:30,440 --> 00:10:32,640 And it's one we can really only speculate about 295 00:10:32,640 --> 00:10:34,880 until that incredible discovery happens. 296 00:10:34,880 --> 00:10:36,480 But speculation is fun, right? 297 00:10:36,480 --> 00:10:39,160 I mean, just thinking about the possibilities is amazing. 298 00:10:39,160 --> 00:10:40,280 It is. 299 00:10:40,280 --> 00:10:42,320 And these thought experiments are important. 300 00:10:42,320 --> 00:10:44,560 They help us prepare for the unknown 301 00:10:44,560 --> 00:10:48,240 and grapple with what such a huge discovery could mean. 302 00:10:48,240 --> 00:10:50,480 So let's explore those what ifs. 303 00:10:50,480 --> 00:10:52,000 What do you think would be the biggest 304 00:10:52,000 --> 00:10:55,280 impact of finding another intelligent civilization? 305 00:10:55,280 --> 00:10:57,120 I think one of the most immediate impacts 306 00:10:57,120 --> 00:11:00,600 would be a total shift in how we see ourselves in the universe. 307 00:11:00,600 --> 00:11:03,280 Right now, we kind of assume we're the only intelligent 308 00:11:03,280 --> 00:11:04,520 beings around. 309 00:11:04,520 --> 00:11:06,280 But finding another civilization would 310 00:11:06,280 --> 00:11:07,680 blow that out of the water. 311 00:11:07,680 --> 00:11:09,800 You'd be like realizing, hey, Earth 312 00:11:09,800 --> 00:11:11,480 isn't the center of the solar system, 313 00:11:11,480 --> 00:11:14,840 or our sun's just one of billions, a big old reality 314 00:11:14,840 --> 00:11:15,320 check. 315 00:11:15,320 --> 00:11:16,720 Yeah, exactly. 316 00:11:16,720 --> 00:11:18,920 It would force us to rethink our place 317 00:11:18,920 --> 00:11:21,400 in the grand scheme of things, to understand 318 00:11:21,400 --> 00:11:24,320 that we're part of a much bigger, more complex story 319 00:11:24,320 --> 00:11:25,640 than we ever imagined. 320 00:11:25,640 --> 00:11:28,280 Humbling and exciting at the same time. 321 00:11:28,280 --> 00:11:31,080 But I imagine there'd be a lot of fear, too. 322 00:11:31,080 --> 00:11:33,680 How would we react to the unknown? 323 00:11:33,680 --> 00:11:37,200 Would we see them as a threat or as potential friends? 324 00:11:37,200 --> 00:11:38,760 Those are natural reactions. 325 00:11:38,760 --> 00:11:41,760 We'd probably experience all sorts of emotions, wonder, 326 00:11:41,760 --> 00:11:45,360 excitement, fear, maybe even a little existential crisis. 327 00:11:45,360 --> 00:11:47,360 How we react would depend on a lot of things, 328 00:11:47,360 --> 00:11:49,840 like what kind of civilization we find 329 00:11:49,840 --> 00:11:51,520 and how they choose to interact with us. 330 00:11:51,520 --> 00:11:53,600 It's like that classic sci-fi dilemma. 331 00:11:53,600 --> 00:11:55,760 Reach out and say hi, or stay quiet 332 00:11:55,760 --> 00:11:57,280 and hope they don't notice us. 333 00:11:57,280 --> 00:12:00,360 Cosmic height and seek, but with much higher stakes. 334 00:12:00,360 --> 00:12:02,240 It's a decision that would need serious thought, 335 00:12:02,240 --> 00:12:04,560 a global conversation about the risks and benefits 336 00:12:04,560 --> 00:12:05,880 of making contact. 337 00:12:05,880 --> 00:12:08,360 And it would force us to deal with some really big ethical 338 00:12:08,360 --> 00:12:09,120 questions. 339 00:12:09,120 --> 00:12:13,440 Like, do we even have the right to speak for all of humanity? 340 00:12:13,440 --> 00:12:15,720 And how do we make sure our interactions are respectful 341 00:12:15,720 --> 00:12:18,240 and don't lead to misunderstandings or conflict? 342 00:12:18,240 --> 00:12:20,360 Those are just some of the ethical challenges. 343 00:12:20,360 --> 00:12:21,800 No easy answers. 344 00:12:21,800 --> 00:12:25,520 It would require a new level of cooperation between nations, 345 00:12:25,520 --> 00:12:27,960 a willingness to put our differences aside 346 00:12:27,960 --> 00:12:30,400 for the good of humanity and maybe 347 00:12:30,400 --> 00:12:32,480 for the good of this new civilization, too. 348 00:12:32,480 --> 00:12:34,200 Lots to think about, but let's focus 349 00:12:34,200 --> 00:12:36,120 on the positives for a minute. 350 00:12:36,120 --> 00:12:39,560 How could finding another civilization benefit humanity? 351 00:12:39,560 --> 00:12:41,120 The possibilities are endless. 352 00:12:41,120 --> 00:12:42,720 Imagine the scientific breakthroughs 353 00:12:42,720 --> 00:12:45,760 we could make by studying their tech, their biology, 354 00:12:45,760 --> 00:12:46,560 their culture. 355 00:12:46,560 --> 00:12:49,000 It would be like opening a door to a whole new world 356 00:12:49,000 --> 00:12:49,880 of knowledge. 357 00:12:49,880 --> 00:12:52,640 Like a Renaissance, but on a cosmic scale. 358 00:12:52,640 --> 00:12:56,120 New ideas and innovations that could transform everything. 359 00:12:56,120 --> 00:12:57,000 Exactly. 360 00:12:57,000 --> 00:12:58,560 And beyond the science, there's also 361 00:12:58,560 --> 00:13:00,800 the potential for cultural enrichment, 362 00:13:00,800 --> 00:13:03,720 learning about their art, music, philosophy. 363 00:13:03,720 --> 00:13:05,320 It would broaden our perspectives, 364 00:13:05,320 --> 00:13:06,840 challenge our assumptions about what 365 00:13:06,840 --> 00:13:09,040 it means to be intelligent, to be alive. 366 00:13:09,040 --> 00:13:11,600 Like a giant cosmic exchange program, 367 00:13:11,600 --> 00:13:13,040 we learn from each other and grow 368 00:13:13,040 --> 00:13:15,400 our understanding of the universe and our place in it. 369 00:13:15,400 --> 00:13:18,040 I can only imagine the incredible stories and insights 370 00:13:18,040 --> 00:13:19,120 that would come from that. 371 00:13:19,120 --> 00:13:19,760 And who knows? 372 00:13:19,760 --> 00:13:22,160 Maybe we'll find we're not so different after all. 373 00:13:22,160 --> 00:13:25,520 Shared values, shared goals, shared challenges. 374 00:13:25,520 --> 00:13:27,140 Maybe we can learn from their mistakes 375 00:13:27,140 --> 00:13:29,880 and avoid making them ourselves. 376 00:13:29,880 --> 00:13:31,640 Maybe we can find solutions to problems 377 00:13:31,640 --> 00:13:33,600 we've been struggling with forever. 378 00:13:33,600 --> 00:13:36,200 Poverty, war, climate change. 379 00:13:36,200 --> 00:13:38,200 Maybe they've figured out how to live in harmony 380 00:13:38,200 --> 00:13:40,320 with their planet and with each other. 381 00:13:40,320 --> 00:13:41,840 Those are some hopeful thoughts. 382 00:13:41,840 --> 00:13:43,600 And it's important to remember that finding 383 00:13:43,600 --> 00:13:46,560 another civilization doesn't have to mean disaster. 384 00:13:46,560 --> 00:13:48,280 It could be the biggest opportunity 385 00:13:48,280 --> 00:13:50,520 for growth and progress we've ever had. 386 00:13:50,520 --> 00:13:53,680 It's a good reminder that even when facing the unknown, 387 00:13:53,680 --> 00:13:57,000 we should approach the universe with curiosity and optimism. 388 00:13:57,000 --> 00:13:58,880 Because who knows what incredible things 389 00:13:58,880 --> 00:13:59,760 are waiting out there. 390 00:13:59,760 --> 00:14:00,800 Absolutely. 391 00:14:00,800 --> 00:14:02,280 And even if we never make contact, 392 00:14:02,280 --> 00:14:04,800 just the act of searching, exploring, 393 00:14:04,800 --> 00:14:08,120 asking these big questions, it speaks to the human spirit, 394 00:14:08,120 --> 00:14:09,760 our endless curiosity. 395 00:14:09,760 --> 00:14:12,940 This has been an amazing deep dive into the Drake equation 396 00:14:12,940 --> 00:14:15,480 and the search for extraterrestrial life. 397 00:14:15,480 --> 00:14:18,120 We've explored the science, the possibilities, the challenges, 398 00:14:18,120 --> 00:14:20,880 and the philosophy behind this huge question. 399 00:14:20,880 --> 00:14:21,880 Are we alone? 400 00:14:21,880 --> 00:14:24,320 And while we don't have a definite answer yet, 401 00:14:24,320 --> 00:14:25,920 one thing's for sure. 402 00:14:25,920 --> 00:14:29,240 The journey itself is full of wonder, mystery, 403 00:14:29,240 --> 00:14:32,000 and the potential for mind blowing discoveries. 404 00:14:32,000 --> 00:14:34,960 So to all our listeners, keep looking up at those stars, 405 00:14:34,960 --> 00:14:37,880 keep asking questions, and never stop exploring. 406 00:14:37,880 --> 00:14:40,920 And don't forget to follow and subscribe to Cosmos in a Pod 407 00:14:40,920 --> 00:14:43,920 and our YouTube channel for more awesome explorations 408 00:14:43,920 --> 00:14:45,200 of the universe. 409 00:14:45,200 --> 00:14:47,440 Until next time. 410 00:14:47,440 --> 00:14:49,800 We've talked about why we haven't found aliens yet 411 00:14:49,800 --> 00:14:52,880 and what kinds of amazing things we might be missing. 412 00:14:52,880 --> 00:14:56,520 But what if, just what if, we do find proof 413 00:14:56,520 --> 00:14:58,280 of another civilization out there? 414 00:14:58,280 --> 00:14:59,920 I mean, what would that mean for us? 415 00:14:59,920 --> 00:15:02,560 How would that change how we see ourselves, 416 00:15:02,560 --> 00:15:03,880 our place in the universe? 417 00:15:03,880 --> 00:15:04,920 That's the question, isn't it? 418 00:15:04,920 --> 00:15:06,800 A question that's been around for, well, forever. 419 00:15:06,800 --> 00:15:09,000 And it's a question we can really only guess at 420 00:15:09,000 --> 00:15:12,000 until that day comes when we actually find something. 421 00:15:12,000 --> 00:15:14,320 But guessing, speculating, that's part of the fun. 422 00:15:14,320 --> 00:15:17,120 I mean, just thinking about the possibilities is pretty wild. 423 00:15:17,120 --> 00:15:17,640 It is. 424 00:15:17,640 --> 00:15:19,800 And I think it's important to think about those what ifs, 425 00:15:19,800 --> 00:15:22,200 because they can help us prepare for the unknown, 426 00:15:22,200 --> 00:15:24,760 to wrap our heads around what such a huge discovery could 427 00:15:24,760 --> 00:15:25,520 mean. 428 00:15:25,520 --> 00:15:28,480 So let's dive into those what ifs. 429 00:15:28,480 --> 00:15:31,120 What do you think would be the biggest impact of finding 430 00:15:31,120 --> 00:15:33,600 another intelligent civilization out there? 431 00:15:33,600 --> 00:15:36,320 Well, I think right off the bat, it would completely 432 00:15:36,320 --> 00:15:38,760 change how we view ourselves in the universe. 433 00:15:38,760 --> 00:15:40,080 Right now, we kind of just assume 434 00:15:40,080 --> 00:15:43,200 we're it, the only intelligent beings around. 435 00:15:43,200 --> 00:15:45,280 But finding another civilization, 436 00:15:45,280 --> 00:15:47,120 that would shatter that view. 437 00:15:47,120 --> 00:15:48,880 It would be like back in the day, 438 00:15:48,880 --> 00:15:51,920 realizing the Earth isn't the center of everything. 439 00:15:51,920 --> 00:15:55,120 Or that our sun is just one star among billions, 440 00:15:55,120 --> 00:15:56,440 a real wake up call. 441 00:15:56,440 --> 00:15:57,200 Exactly. 442 00:15:57,200 --> 00:16:00,200 It would force us to reevaluate our place 443 00:16:00,200 --> 00:16:02,000 in the grand scheme of things, to realize 444 00:16:02,000 --> 00:16:04,600 we're part of something much bigger, much more complex 445 00:16:04,600 --> 00:16:05,920 than we ever imagined. 446 00:16:05,920 --> 00:16:08,120 It's kind of scary, but also really exciting 447 00:16:08,120 --> 00:16:09,320 at the same time. 448 00:16:09,320 --> 00:16:11,600 But I bet there'd be a lot of fear, too, right? 449 00:16:11,600 --> 00:16:13,720 How would we react to something so unknown? 450 00:16:13,720 --> 00:16:17,200 Would we see them as a threat or as potential friends? 451 00:16:17,200 --> 00:16:19,360 Well, those are all natural reactions. 452 00:16:19,360 --> 00:16:22,600 We'd probably feel a whole mix of emotions, you know? 453 00:16:22,600 --> 00:16:26,440 Wonder, excitement, fear, maybe even a bit 454 00:16:26,440 --> 00:16:29,200 of an existential crisis. 455 00:16:29,200 --> 00:16:31,040 How we ultimately respond, though, 456 00:16:31,040 --> 00:16:32,520 would depend on a lot of things. 457 00:16:32,520 --> 00:16:34,880 The nature of the civilization we find, 458 00:16:34,880 --> 00:16:37,040 how they choose to interact with us, all that. 459 00:16:37,040 --> 00:16:38,880 It's like that classic sci-fi dilemma. 460 00:16:38,880 --> 00:16:39,640 Yeah. 461 00:16:39,640 --> 00:16:42,000 Do we reach out, say hello? 462 00:16:42,000 --> 00:16:44,760 Or do we lay low and hope they don't notice us? 463 00:16:44,760 --> 00:16:47,040 It's like a game of cosmic hide and seek, 464 00:16:47,040 --> 00:16:49,160 but with much, much higher stakes. 465 00:16:49,160 --> 00:16:52,760 It's a decision that would require some serious thought. 466 00:16:52,760 --> 00:16:55,240 We need a global conversation, talking 467 00:16:55,240 --> 00:16:57,480 about the risks and benefits of making contact. 468 00:16:57,480 --> 00:16:59,520 And it would force us to confront some really 469 00:16:59,520 --> 00:17:01,200 big ethical questions. 470 00:17:01,200 --> 00:17:02,960 Yeah, like do we even have the right 471 00:17:02,960 --> 00:17:05,040 to speak for everyone on Earth? 472 00:17:05,040 --> 00:17:07,040 And how do we make sure we're being respectful, 473 00:17:07,040 --> 00:17:09,760 that we don't accidentally start a conflict or something? 474 00:17:09,760 --> 00:17:10,360 Exactly. 475 00:17:10,360 --> 00:17:12,120 Those are just some of the ethical challenges. 476 00:17:12,120 --> 00:17:13,480 And there are no easy answers. 477 00:17:13,480 --> 00:17:15,840 It would require a whole new level of cooperation 478 00:17:15,840 --> 00:17:16,720 between countries. 479 00:17:16,720 --> 00:17:19,120 We'd have to be willing to put aside our differences 480 00:17:19,120 --> 00:17:21,320 for the good of humanity, and maybe even 481 00:17:21,320 --> 00:17:23,760 for the good of this new civilization we've found. 482 00:17:23,760 --> 00:17:25,880 It's a lot to process. 483 00:17:25,880 --> 00:17:29,080 But let's for a minute think about the good stuff. 484 00:17:29,080 --> 00:17:32,240 What are some ways finding another civilization 485 00:17:32,240 --> 00:17:33,760 could actually benefit us? 486 00:17:33,760 --> 00:17:36,280 Oh, man, the possibilities are endless. 487 00:17:36,280 --> 00:17:38,720 Think of the scientific advances we could make. 488 00:17:38,720 --> 00:17:41,720 Studying their technology, their biology, their culture. 489 00:17:41,720 --> 00:17:44,840 It'd be like opening a door to a whole new world of knowledge. 490 00:17:44,840 --> 00:17:47,480 Like a, I don't know, a cosmic renaissance or something. 491 00:17:47,480 --> 00:17:49,520 A burst of new ideas, innovations, 492 00:17:49,520 --> 00:17:50,720 that could change everything. 493 00:17:50,720 --> 00:17:51,800 Exactly. 494 00:17:51,800 --> 00:17:54,960 And beyond the science, think of the cultural exchange. 495 00:17:54,960 --> 00:17:58,360 Learning about their art, music, philosophy, 496 00:17:58,360 --> 00:18:00,240 it would broaden our horizons, make 497 00:18:00,240 --> 00:18:02,840 us challenge our assumptions about what 498 00:18:02,840 --> 00:18:05,320 it means to be intelligent, what it means to be alive. 499 00:18:05,320 --> 00:18:07,560 Like a giant cosmic exchange program. 500 00:18:07,560 --> 00:18:10,000 We learn from each other, expand our understanding 501 00:18:10,000 --> 00:18:12,080 of the universe and our place in it. 502 00:18:12,080 --> 00:18:13,960 I can only imagine the stories and insights 503 00:18:13,960 --> 00:18:15,080 that would come out of that. 504 00:18:15,080 --> 00:18:15,720 And who knows? 505 00:18:15,720 --> 00:18:18,080 Maybe we'd find that we're not so different after all. 506 00:18:18,080 --> 00:18:20,400 Maybe we have shared values, shared goals, even 507 00:18:20,400 --> 00:18:21,540 shared challenges. 508 00:18:21,540 --> 00:18:23,520 We could learn from their mistakes, 509 00:18:23,520 --> 00:18:25,640 avoid making the same ones ourselves. 510 00:18:25,640 --> 00:18:28,280 Maybe we could find solutions to problems 511 00:18:28,280 --> 00:18:30,200 that have been bugging us forever. 512 00:18:30,200 --> 00:18:32,760 Poverty, war, climate change. 513 00:18:32,760 --> 00:18:34,260 Maybe they've already figured out 514 00:18:34,260 --> 00:18:38,000 how to live in harmony with their planet, with each other. 515 00:18:38,000 --> 00:18:40,200 Now, those are some hopeful thoughts. 516 00:18:40,200 --> 00:18:43,880 And it's important to remember, finding another civilization, 517 00:18:43,880 --> 00:18:45,680 it doesn't have to be a bad thing. 518 00:18:45,680 --> 00:18:48,360 It could be the greatest opportunity for growth 519 00:18:48,360 --> 00:18:51,080 and progress that humanity has ever had. 520 00:18:51,080 --> 00:18:52,960 Yeah, it's a good reminder that even when 521 00:18:52,960 --> 00:18:54,720 we're dealing with the unknown, we 522 00:18:54,720 --> 00:18:58,240 should approach the universe with a sense of wonder 523 00:18:58,240 --> 00:18:59,200 and optimism. 524 00:18:59,200 --> 00:19:01,440 Because you never know what amazing things are out there 525 00:19:01,440 --> 00:19:02,520 waiting to be discovered. 526 00:19:02,520 --> 00:19:03,560 I couldn't agree more. 527 00:19:03,560 --> 00:19:05,400 Even if we never actually make contact, 528 00:19:05,400 --> 00:19:07,340 the fact that we're searching, exploring, 529 00:19:07,340 --> 00:19:09,680 asking these big questions, it says a lot 530 00:19:09,680 --> 00:19:12,400 about the human spirit, our endless curiosity. 531 00:19:12,400 --> 00:19:15,380 This has been an incredible deep dive into the Drake equation 532 00:19:15,380 --> 00:19:17,680 and the search for extraterrestrial life. 533 00:19:17,680 --> 00:19:20,000 We've talked about the science, the possibilities, 534 00:19:20,000 --> 00:19:22,480 the challenges, and the really big questions about whether 535 00:19:22,480 --> 00:19:24,860 or not we're alone in this vast universe. 536 00:19:24,860 --> 00:19:27,800 And while we might not have a clear answer just yet, 537 00:19:27,800 --> 00:19:29,420 one thing is certain. 538 00:19:29,420 --> 00:19:32,160 The journey itself is full of wonder, mystery, 539 00:19:32,160 --> 00:19:35,000 and the potential for some truly mind blowing discoveries. 540 00:19:35,000 --> 00:19:36,680 So to all our listeners out there, 541 00:19:36,680 --> 00:19:39,480 keep looking up at the stars, keep those questions coming, 542 00:19:39,480 --> 00:19:42,240 and never stop exploring the wonders of the universe. 543 00:19:42,240 --> 00:19:44,200 And hey, don't forget to follow and subscribe 544 00:19:44,200 --> 00:19:46,520 to Cosmos in a Pod and our YouTube channel 545 00:19:46,520 --> 00:19:48,800 for more awesome explorations of the cosmos. 546 00:19:48,800 --> 00:20:03,000 Until next time.