1 00:00:03,830 --> 00:00:01,990 many people would claim that the craft 2 00:00:06,150 --> 00:00:03,840 or uaps are potentially using 3 00:00:07,749 --> 00:00:06,160 anti-gravity technology that's something 4 00:00:09,350 --> 00:00:07,759 that's quite common would it be 5 00:00:11,350 --> 00:00:09,360 pertinent for people like yourself in 6 00:00:14,070 --> 00:00:11,360 the galileo project to look for 7 00:00:15,990 --> 00:00:14,080 signatures like gravitational waves and 8 00:00:18,950 --> 00:00:16,000 could you potentially track these using 9 00:00:21,429 --> 00:00:18,960 ligo or other laser interferometers 10 00:00:22,310 --> 00:00:21,439 okay so let me first say what is known 11 00:00:24,630 --> 00:00:22,320 uh 12 00:00:25,670 --> 00:00:24,640 in terms of the current science that we 13 00:00:27,349 --> 00:00:25,680 know about 14 00:00:28,870 --> 00:00:27,359 first of all 15 00:00:31,830 --> 00:00:28,880 according to einstein's theory of 16 00:00:33,830 --> 00:00:31,840 gravity you can get 17 00:00:35,830 --> 00:00:33,840 repulsive gravity 18 00:00:38,310 --> 00:00:35,840 and in fact 19 00:00:39,990 --> 00:00:38,320 you get it when the vacuum 20 00:00:43,030 --> 00:00:40,000 you know the vacuum is what what you 21 00:00:45,750 --> 00:00:43,040 have when you remove all the matter so 22 00:00:47,990 --> 00:00:45,760 when the vacuum itself has some mass 23 00:00:49,430 --> 00:00:48,000 density mass per unit volume or energy 24 00:00:51,750 --> 00:00:49,440 per unit volume 25 00:00:53,830 --> 00:00:51,760 it you can show that that in in the 26 00:00:54,709 --> 00:00:53,840 context of einstein's theory of gravity 27 00:00:58,150 --> 00:00:54,719 that 28 00:00:59,750 --> 00:00:58,160 gives you a repulsive force and actually 29 00:01:02,150 --> 00:00:59,760 we observe it 30 00:01:03,990 --> 00:01:02,160 so einstein thought well it's a mistake 31 00:01:05,670 --> 00:01:04,000 of my theory that 32 00:01:07,830 --> 00:01:05,680 you know it gives this 33 00:01:09,429 --> 00:01:07,840 so-called cosmological constant you know 34 00:01:10,630 --> 00:01:09,439 that has to do with the energy of the 35 00:01:12,710 --> 00:01:10,640 vacuum 36 00:01:14,789 --> 00:01:12,720 he thought oh i should get rid of it 37 00:01:16,630 --> 00:01:14,799 because otherwise you know 38 00:01:18,710 --> 00:01:16,640 you know he was thinking about it just 39 00:01:20,070 --> 00:01:18,720 to balance the expansion of the universe 40 00:01:22,230 --> 00:01:20,080 at the time he thought the universe 41 00:01:23,910 --> 00:01:22,240 doesn't expand so he thought having a 42 00:01:26,230 --> 00:01:23,920 repulsive force 43 00:01:29,429 --> 00:01:26,240 of gravity balancing the attractive 44 00:01:30,870 --> 00:01:29,439 force of matter would make the universe 45 00:01:32,550 --> 00:01:30,880 static 46 00:01:34,630 --> 00:01:32,560 not expanding if you have a perfect 47 00:01:36,230 --> 00:01:34,640 balance between the two forces 48 00:01:38,789 --> 00:01:36,240 but then he realized he was wrong 49 00:01:41,670 --> 00:01:38,799 because edwin hubble 50 00:01:43,990 --> 00:01:41,680 argued the universe is expanding and and 51 00:01:45,510 --> 00:01:44,000 einstein said oh that was a mistake i i 52 00:01:47,670 --> 00:01:45,520 shouldn't have thought about this 53 00:01:49,510 --> 00:01:47,680 repulsive gravity but it turns out that 54 00:01:51,510 --> 00:01:49,520 it exists and in fact even though the 55 00:01:53,830 --> 00:01:51,520 universe is expanding 56 00:01:56,310 --> 00:01:53,840 its expansion is accelerating 57 00:01:59,190 --> 00:01:56,320 recently and that means that there is 58 00:02:01,670 --> 00:01:59,200 something pushing galaxies apart 59 00:02:02,310 --> 00:02:01,680 uh a repulsive gravitational force which 60 00:02:06,389 --> 00:02:02,320 is 61 00:02:09,669 --> 00:02:06,399 cosmological constant the vacuum energy 62 00:02:11,830 --> 00:02:09,679 density and so it exists we know of that 63 00:02:13,190 --> 00:02:11,840 uh what is the nature of the vacuum 64 00:02:15,030 --> 00:02:13,200 energy that is 65 00:02:17,110 --> 00:02:15,040 causing this expansion 66 00:02:18,949 --> 00:02:17,120 you know where does it come from from a 67 00:02:21,750 --> 00:02:18,959 fundamental physics point of view we 68 00:02:23,830 --> 00:02:21,760 don't really understand that okay but 69 00:02:26,790 --> 00:02:23,840 the existence of a repulsive gravity 70 00:02:28,790 --> 00:02:26,800 anti-gravity is known to to be real 71 00:02:30,150 --> 00:02:28,800 because that the nobel prize was awarded 72 00:02:32,150 --> 00:02:30,160 for that and 73 00:02:33,910 --> 00:02:32,160 for the discovery of the accelerated 74 00:02:35,670 --> 00:02:33,920 expansion of the universe 75 00:02:37,350 --> 00:02:35,680 uh so the universe is not only expanding 76 00:02:39,830 --> 00:02:37,360 it's expanding with a speed that is 77 00:02:42,229 --> 00:02:39,840 increasing over time as if something is 78 00:02:45,350 --> 00:02:42,239 pushing everything apart and that 79 00:02:48,150 --> 00:02:45,360 happens uh only in recent 80 00:02:50,070 --> 00:02:48,160 history uh if you go back in time at 81 00:02:52,229 --> 00:02:50,080 early on the density of metal was so 82 00:02:54,949 --> 00:02:52,239 large much larger than the density of 83 00:02:56,949 --> 00:02:54,959 the vacuum the matter the matter density 84 00:02:59,110 --> 00:02:56,959 dominated the the radiation density 85 00:03:01,110 --> 00:02:59,120 dominated and at that point gravity was 86 00:03:03,350 --> 00:03:01,120 attractive so it's only a recent 87 00:03:05,589 --> 00:03:03,360 phenomena over the past 88 00:03:08,149 --> 00:03:05,599 half of the age of the universe that 89 00:03:10,630 --> 00:03:08,159 matter and radiation were diluted enough 90 00:03:13,110 --> 00:03:10,640 for the vacuum to take over and dominate 91 00:03:15,910 --> 00:03:13,120 and and show this accelerated expansion 92 00:03:16,710 --> 00:03:15,920 before that it wasn't really important 93 00:03:18,470 --> 00:03:16,720 uh 94 00:03:19,509 --> 00:03:18,480 except maybe very early on in the 95 00:03:22,149 --> 00:03:19,519 universe 96 00:03:24,149 --> 00:03:22,159 okay so that's what we know now 97 00:03:27,910 --> 00:03:24,159 uh that doesn't mean that we can 98 00:03:30,869 --> 00:03:27,920 manipulate the vacuum and sort of uh 99 00:03:32,789 --> 00:03:30,879 engineer it to propel things 100 00:03:34,789 --> 00:03:32,799 uh based on what we know we don't know 101 00:03:36,070 --> 00:03:34,799 how to do that let's put it that way we 102 00:03:39,589 --> 00:03:36,080 don't know how to 103 00:03:42,470 --> 00:03:39,599 sort of excavate the vacuum and and and 104 00:03:44,710 --> 00:03:42,480 you know use it for propulsion uh but 105 00:03:45,589 --> 00:03:44,720 that doesn't mean that it cannot be done 106 00:03:47,430 --> 00:03:45,599 i mean 107 00:03:49,430 --> 00:03:47,440 perhaps 108 00:03:51,910 --> 00:03:49,440 a more advanced scientific civilization 109 00:03:54,710 --> 00:03:51,920 would be able to do that so i wouldn't 110 00:03:57,589 --> 00:03:54,720 rule it out it's just that we don't have 111 00:03:59,589 --> 00:03:57,599 any idea of how to do that how to 112 00:04:02,070 --> 00:03:59,599 you know propel something using the 113 00:04:04,470 --> 00:04:02,080 vacuum we don't know how to do that 114 00:04:06,789 --> 00:04:04,480 um and then the other thing i would say 115 00:04:08,229 --> 00:04:06,799 is gravitational waves are really 116 00:04:09,509 --> 00:04:08,239 difficult to 117 00:04:16,150 --> 00:04:09,519 excite 118 00:04:18,710 --> 00:04:16,160 it's you know in order to produce a 119 00:04:21,189 --> 00:04:18,720 meaningful level of a gravitational wave 120 00:04:24,469 --> 00:04:21,199 so that we can detect it with a 121 00:04:26,790 --> 00:04:24,479 an observatory like ligo or or the 122 00:04:30,310 --> 00:04:26,800 future observatories that we will build 123 00:04:33,030 --> 00:04:30,320 um what you read is what you need is a 124 00:04:33,749 --> 00:04:33,040 a very high concentration of of mass 125 00:04:34,950 --> 00:04:33,759 like 126 00:04:36,550 --> 00:04:34,960 you get 127 00:04:38,790 --> 00:04:36,560 in a black hole 128 00:04:41,670 --> 00:04:38,800 but the point is if you have that 129 00:04:43,110 --> 00:04:41,680 concentration of mass just the newtonian 130 00:04:45,110 --> 00:04:43,120 effect forget about gravity 131 00:04:47,350 --> 00:04:45,120 gravitational waves just the fact that 132 00:04:49,189 --> 00:04:47,360 you have this mass that is 133 00:04:51,670 --> 00:04:49,199 you know a very large mass in order to 134 00:04:52,710 --> 00:04:51,680 generate strong waves that must by 135 00:04:55,270 --> 00:04:52,720 itself 136 00:04:57,590 --> 00:04:55,280 acts on anything on earth 137 00:05:00,390 --> 00:04:57,600 using you know based on newton's law of 138 00:05:04,310 --> 00:05:00,400 gravity okay so just like the sun acts 139 00:05:05,670 --> 00:05:04,320 on us or jupiter acts on us so 140 00:05:07,350 --> 00:05:05,680 before you even worry about 141 00:05:09,430 --> 00:05:07,360 gravitational waves there would be this 142 00:05:11,189 --> 00:05:09,440 newtonian effect that would move things 143 00:05:14,950 --> 00:05:11,199 around and we would notice it because 144 00:05:16,710 --> 00:05:14,960 the oceans would show a tide and so 145 00:05:18,550 --> 00:05:16,720 don't think about gravitational waves as 146 00:05:21,029 --> 00:05:18,560 if that would be the only way we would 147 00:05:24,150 --> 00:05:21,039 learn about a massive compact object 148 00:05:26,310 --> 00:05:24,160 that you know because long before that 149 00:05:28,150 --> 00:05:26,320 uh there would be effects like on the 150 00:05:30,310 --> 00:05:28,160 oceans a tidal effect due to the 151 00:05:32,870 --> 00:05:30,320 newtonian gravity that would 152 00:05:34,469 --> 00:05:32,880 move the oceans around in a way that is 153 00:05:35,830 --> 00:05:34,479 noticeable so 154 00:05:37,749 --> 00:05:35,840 so i would 155 00:05:39,350 --> 00:05:37,759 suggest not to think about gravitational 156 00:05:41,350 --> 00:05:39,360 waves as a good 157 00:05:43,749 --> 00:05:41,360 way of detecting 158 00:05:46,230 --> 00:05:43,759 objects because there are much bigger 159 00:05:48,070 --> 00:05:46,240 effects that come into play before 160 00:05:51,110 --> 00:05:48,080 gravitation waves 161 00:05:53,270 --> 00:05:51,120 affect us or are measurable just based 162 00:05:56,629 --> 00:05:53,280 on gravity i'm saying 163 00:05:58,070 --> 00:05:56,639 there are other effects based on gravity 164 00:06:01,749 --> 00:05:58,080 that are much stronger like the 165 00:06:02,870 --> 00:06:01,759 newtonian force uh of a passing object 166 00:06:04,550 --> 00:06:02,880 so 167 00:06:08,230 --> 00:06:04,560 it's very difficult to generate 168 00:06:10,469 --> 00:06:08,240 detectable gravitational waves without 169 00:06:11,990 --> 00:06:10,479 producing a strong newtonian force 170 00:06:14,550 --> 00:06:12,000 that's my point 171 00:06:15,990 --> 00:06:14,560 so i would argue 172 00:06:18,309 --> 00:06:16,000 let's not think about gravitational 173 00:06:20,390 --> 00:06:18,319 waves as a good way to detect things we 174 00:06:21,670 --> 00:06:20,400 can use newtonian 175 00:06:25,110 --> 00:06:21,680 gravity 176 00:06:26,469 --> 00:06:25,120 to detect them much more easily and on 177 00:06:29,110 --> 00:06:26,479 top of that there are other things that 178 00:06:31,270 --> 00:06:29,120 we can observe of course using um 179 00:06:33,029 --> 00:06:31,280 light you know radiation 180 00:06:35,270 --> 00:06:33,039 either reflected of the object or