[0:03:56 - 0:04:01] Ladies and gentlemen, today my esteemed guest is none other than Dr.
Avi Loeb,
[0:11:47 - 0:11:57] It's just that there's a lack of evidence, and you don't feel like solely h
aving one piece of intel would be enough to come to a conclusion.
[0:12:18 - 0:12:31] I think they were telling what they really believe in to be the truth, but imagine the US government h
aving retrieval and reverse engineering program from crash sites.
[0:42:12 - 0:42:26] And that something like us exists on planets that had similar conditions being at the same distance from their host star, you know, made of rock and potentially h
aving an atmosphere.
[0:57:01 - 0:57:07] He has this idea that there are two types of gr
avity, they behave in waves and that gr
avity A is this sort of,
[0:57:07 - 0:57:19] well, gr
avity B is like the planet, you know, the general gr
avity and then gr
avity A is this gr
avity that's manufactured that you can increase at a point to sort of snap forward.
[0:57:19 - 0:57:26] Well, what we know about gr
avity is what Albert Einstein summarized in his theory of generativity.
[0:57:31 - 0:57:44] I mean, so when we launch spacecraft, we are just responding to the standard gr
avity that, you know, the Earth, the Sun, planets, any other body generates.
[0:57:44 - 0:57:49] And as far as we know, there are only positive masses that produce gr
avity.
[0:57:49 - 0:58:01] Gr
avity is attractive, you know, that was the idea of Newton, you know, he saw the apple falling and realized, oh yeah, there is a gr
avitational force pulling it towards the Earth.
[0:58:27 - 0:58:37] And according to Einstein, it's possible to get an effect of repulsive gr
avity if the vacuum itself has some mass density.
[0:58:53 - 0:59:01] But at any event, you can get repulsive gr
avity on average in the universe at large.
[0:59:06 - 0:59:20] Because if you could just imagine a positive mass and a negative mass next to each other, the positive mass would pull the negative mass because it has a direct gr
avity, the negative mass will push away the positive mass.
[0:59:31 - 0:59:39] You don't need any fuel for that. It's just the result of the existence of repulsive gr
avity if you were to bottle the negative mass.
[1:01:10 - 1:01:20] Anyway, this is just one example of a situation where gr
avity follows Einstein's theory, except that there is some new ingredient, like negative mass.
[1:03:28 - 1:03:39] So at any event, they came up with a solution of a wormhole, but then it was founded such a solution is not stable within Einstein's theory of gr
avity.
[1:03:49 - 1:03:59] And then it was realized that perhaps you can stabilize this wormhole again if you had access to exotic material that produce a negative gr
avity kind of a negative like 1115 type.
[1:11:38 - 1:11:45] And so to me as a scientist, you know, the Galileo project is already h
aving data on millions of objects in the sky.
[1:27:10 - 1:27:20] You know, even three bodies, according to Newton, you know, when they move around, according to law of gr
avity, that Newton came up with, they also show some chaos.
[1:30:16 - 1:30:28] If you really believe in God being capable of everything, then there shouldn't be any problem with h
aving other siblings on exoplanets.
[1:35:24 - 1:35:42] Suppose you were to produce something made of dark matter, you know, then you won't see it. Okay. And it will be invisible because we can't see dark matter with the only way for us to detect it is gr
avitationally.
[1:35:42 - 1:36:04] So once we develop and we have right now a LIGO, which detects gr
avitational waves. And I actually did a calculation. I wrote a paper where I calculated that an object that weighs about 100,000 tons that moves close to the speed of light.
[1:36:23 - 1:36:49] It's interesting that LIGO can detect not only gr
avitation waves, but also the gr
avitational title effect of a passing object. If it's massive enough and moves fast enough. And I was already able to put some constraint that, you know, nothing like that happened within the operation period of LIGO. And one can set limits on the existence of objects that are hundred thousand tons that are moving not close to the speed of light.
[1:37:09 - 1:37:24] In principle, you cannot avoid gr
avity. So eventually when we build, for example, there is a plan to build Lisa, which would be an interferometer in space. It would be sensitive to smaller objects moving slower.
[1:37:41 - 1:37:53] So if something like that is detected gr
avitation, I think some people will immediately jump at the opportunity and say, oh, this might be the dark matter, you know, passing through, but it could also be a stealth and
[1:37:53 - 1:38:06] space. Technology. Yeah, it could be that. So I'm saying there will be a new window that will open up once we are able to detect gr
avitationally because you can imagine things that avoid detection electromagnetic.
[1:42:11 - 1:42:17] I mean, we can't even detect it, yeah, until perhaps we have this gr
avity detecting technology that is super exciting.
[1:45:01 - 1:45:11] So it's not really a real physical theory, I would say. So we don't have a theory of quantum gr
avity, we don't know if string theory is the correct path for that.
[1:45:11 - 1:45:28] It's possible that the problems we have with figuring out quantum mechanics have to do with the way we conceive of space and time, and that once we have a theory of quantum gr
avity, the entire collapse of the wave function will be understood at a more fundamental level.
[1:45:28 - 1:45:42] So it wouldn't be surprised if the lack of quantum gr
avity, a theory of quantum gr
avity is connected to our lack of understanding of the fundamental interpretation of quantum mechanics.
[1:46:58 - 1:47:05] So you would not be able to tell the difference between the beh
avior of a human.
[1:51:14 - 1:51:26] But more importantly, it would help us develop a theory of quantum gr
avity. If we knew what were the ingredients that were that led to our universe, to the birth of our universe.
[1:56:51 - 1:57:07] But that was just curiosity, but the question about going back in time or h
aving negative gr
avity, you know, a repulsive gr
avity from a negative mass, these are, you know, things that go well beyond what we currently imagine.
[1:57:13 - 1:57:20] Thank you so much, Abby, for joining me here for traveling all this way and h
aving this conversation.
[1:57:44 - 1:57:50] So if you just search for
avilogue at medium.com, you can subscribe for free.