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00:01:40.580Hello and welcome to For the Wild podcast. I'm Ayanna Young. Today I'm speaking with Dr. Chanda
00:01:48.000Prescod-Weinstein. The night sky can be part of our liberation discourse and not just part of
00:01:57.180our fears about what technology is doing to us. Dr. Chanda Prescod-Weinstein is an assistant
00:02:05.180professor of physics and core faculty in women's and gender studies at the University of New0.98
00:02:11.120Hampshire, USA. Her work on particle physics and cosmology focuses especially on the dark
00:02:17.720matter problem, and she is a topical convener for the 2021 Snowmass Particle Physics Community
00:02:24.580Planning Process. In addition, Dr. Prescott Weinstein is a Black feminist theorist of science,1.00
00:02:32.100technology, and society studies, and she is an executive committee member of the American
00:02:37.820Physical Society Forum on the History of Physics. She is the recipient of the APS 2021
00:02:44.260Edward A. Bouchot Award for Contributions to Particle Cosmology Research and Co-Founding
00:02:50.660Particles for Justice. Dr. Prescod Weinstein's book, The Disordered Cosmos, A Journey into Dark
00:02:57.460Matter, Space, Time, and Dreams Deferred, will be published in the U.S. and Canada on March 9th, 2021.
00:03:04.420one. Thank you so much for joining us today to speak to a topic that we have yet to cover on
00:03:15.480for the wild. So I am really excited. Thank you for having me on. I'm excited.
00:03:21.680As big as a question as this is, I'd like to begin by situating listeners in the disorder
00:03:28.060of the universe. So to start us off, I wonder if you can share how physics or cosmology
00:03:34.300can help give us some perspective as we think about our relationship with the timescale of
00:03:39.880the universe? I think one of the kind of intersections of cosmology and philosophy
00:03:46.040maybe is to think about not just what was our history. So you're kind of starting with
00:03:52.820the inflationary era, which is 10 to the minus 43 seconds after whatever started our bubble of
00:04:00.360space time. Sometimes we call this the Big Bang, but we're not really sure what happened. So that's
00:04:06.380a period when space time expanded really rapidly. And so space time grew very quickly. And it
00:04:14.020happened in less than a second. So it's a very short time frame, very dramatic change to the
00:04:19.000universe. And then in the time since then, space time has just been expanding. So that's all of
00:04:24.560our, that's our past, that's our history. One of the questions that we can ask is also what will
00:04:29.820be the future of space-time. So that's not something that I have personally done a lot
00:04:34.420of research on. I definitely point people to Katie Mack's, the end of everything, if they're
00:04:39.140interested in these kinds of questions. But it is really a very different time scale that,
00:04:44.480as I mentioned, the inflationary era happened during a very short fraction of a second.
00:04:49.880And then, since then, there have been something like around 14 billion years. And in the future,
00:04:58.100the universe will look different from the way that it looks now. And so there really are just
00:05:03.800these very different timescales involved in the different types of scientific questions that we
00:05:11.040can ask, depending on what period of time we're interested in, that you have to concern yourself
00:05:16.720with very, very short timescales or extremely long ones. And when you say the universe would
00:05:24.120look very different or will look very different what does that mean if you could describe that a
00:05:29.760bit for us yeah so one hypothesis is that eventually the stars that exist now will burn out
00:05:38.020they'll burn all of their hydrogen and some of them will supernova some of them will turn into
00:05:42.920what we erroneously call planetary nebulae and this is like a historical term because people
00:05:48.860used to think that they were planets but they're actually just like remnants of stars so they're
00:05:53.700kind of like the grave of a star or something like that and um so the thought is that because
00:06:00.640of the expansion of space-time fewer and fewer next generation stars will be born because um so
00:06:07.900much stuff is going to be pulled apart and so one potential uh long-term future for the universe is
00:06:16.160that the universe does get darker that there's less light traveling through it there's less
00:06:22.020light being produced. So that's certainly one outcome. Again, it's not something that I think
00:06:27.560about a lot, because I think there are so many questions with the history that I can't even
00:06:31.580worry about the future yet. Yeah, what initially drew me to your work was your focus on early
00:06:38.460universe cosmology. So I'm wondering if you could share a bit about your focus here and what we know
00:06:45.820about the potential beginning of the universe, and how theoretical cosmology is really a form
00:06:51.840of storytelling? Yeah, I like to think of what I do as storytelling using math. So I think there
00:07:00.500are a lot of different ways to tell stories about the universe and they do different things for us.
00:07:06.940So I subscribe to the Sylvia Winter School of Thought that we are a biocultural species
00:07:12.320where storytelling is embedded in who we are as a species. And so the different types of
00:07:19.160storytelling that we do, I think, do different things. And, you know, I am not at the school
00:07:25.680of scientists who thinks that one particular form of storytelling is superior to the others.
00:07:30.360As a Jew, I think that the storytelling we do in my synagogue is actually really important for
00:07:34.980helping me think about my values. And I actually think that, you know, the mathematical stories
00:07:39.660we tell don't necessarily help us think about our values. And actually, sometimes when we try and do
00:07:44.120that mathematical storytelling without thinking about values, it gets us into trouble. So,
00:07:49.160I think one of the things that's really tantalizing about doing theoretical cosmology is that we can use all of this physics that we've basically developed just from looking at the night sky and just from doing experiments here on Earth.
00:08:03.360And we can actually put together a coherent story that is self-consistent with all of
00:08:11.000the observations that we see that gives us the story from, again, 10 to the minus 43
00:08:16.660So, you know, a decimal point with over 40 zeros after it, that we can tell a story from
00:08:22.740that point in time to the point where we are now.
00:08:25.380And there are certainly holes in it, but actually we have a pretty good coherent story that
00:08:31.060has, relatively speaking, very few holes in it. Before we delve into the disordered cosmos and
00:08:40.740the fusion of work you unfurl, I'd like to sort of introduce listeners to this fusion
00:08:46.360through your thought around dark matter. I understand that things like galaxies, stars,
00:08:53.240planets, humans, and trees make up about 5% of the matter in our universe, whereas 85% of
00:09:00.980matter in the universe is considered intangible dark matter. So can you share what the fascination
00:09:07.980is with dark matter for listeners who are newer to astrophysics before we get into the terminology?
00:09:16.360Why is dark matter fascinating to us? I think probably I answered this question like very
00:09:21.780differently from someone who doesn't actually do research in the field, right? But for me,
00:09:25.880it's such an incredible thing that actually the universe is mostly stuff that we can't see so
00:09:33.060we're used to thinking of the universe in terms of what we can see and really this whole paradigm
00:09:39.320that most of the matter in the universe is transparent to light that light seems to go
00:09:44.980right through it so we call it dark matter for for reasons that you say we'll discuss in a moment
00:09:50.760But it's incredible that actually the universe is mostly what we can't see, not mostly what we can see. It's a complete reversal, I think, of our entire intuition about what's going on when we look at the sky.
00:10:04.740yeah that brings up so much about what we can and can't see and the power or belief that we put into
00:10:17.860what you know both of those uh or that binary and um in the disorder cosmos you examine the
00:10:27.540naming of dark matter and how it is often incorrectly framed as something foreboding
00:10:32.960and unknown, when in fact, this matter is vital to all that exists. So can you share why the term
00:10:40.860dark matter is a misnomer, and how this example can serve as a primer to some of the larger work
00:10:47.340you're interrogating when it comes to the colonial legacy of really all academic fields?
00:10:54.840So as I just mentioned, light goes through it. So it's not dark, it doesn't absorb light the way
00:11:01.680that objects that have a dark color tend to and you know it's simply really the absence of anything
00:11:11.900impeding light in some sense so if I were to have like a bunch of dark matter in my hands if it was
00:11:18.620possible to put dark matter in my hands I would feel like weighed down like it would feel like I
00:11:24.540was holding something that had some weight associated with it because it has mass but I
00:11:30.480would still be able to see my hands because light would go through the dark matter. It would bounce
00:11:36.040off my hands into my eyes just the way that it would if the dark matter wasn't there. Maybe the
00:11:40.960dark matter would disturb the light a little bit. But what we know so far about dark matter is that
00:11:45.520for the most part, it doesn't have interactions with light. If it does have interactions with
00:11:49.840light, they're very minimal. So when we're thinking about why is dark matter called dark
00:11:55.360matter. I want people to really unpack what is the history of the context in which this term arose
00:12:01.900and what were the associations that people in that time period had with dark, in particular
00:12:07.300in Europe? How is the word dark being used and circulated socially? And sort of the larger point
00:12:14.780here is that all of these questions of how we name things are always social questions. They're
00:12:20.400not being handed down to us on a mount on a tablet from you know some higher being or something like
00:12:28.840that these are decisions being made by people and their cultural context informs what seems normal
00:12:35.800to them that is such a good point really important for us to interrogate where language comes from
00:12:46.920and how that shapes the way we understand things yeah i studied theology in undergrad and
00:12:55.780just learning about the context behind so much of the bible for instance was really
00:13:03.960eye-opening and um so i i can see how the time in which this was created influenced
00:13:14.260how it's been replicated in academia over this time and um yeah in the past couple years
00:13:26.320there's been a huge effort by both private companies and the government to begin developing
00:13:32.300plans and technology to colonize space as a new frontier instead of extending dominion
00:13:39.440across oceans, many are now looking to reach above. And in terms of colonial processes, I
00:13:46.960think back to previous conversations I've had, where indigenous folks are acutely aware of what
00:13:54.340the future implications are of colonial processes. How the water is poisoned, the land degraded, etc.
00:14:01.480But it doesn't matter at all to those who are doing the colonizing, even though they too will
00:14:07.280be impacted. You also write about this potential reality in terms of space colonization. And so I
00:14:14.360wonder if I could ask you how you're thinking about future preclusions in terms of the universe.
00:14:22.720You know, I'm always a little bit worried about us humans deciding to go off and do something
00:14:31.400that we still don't do well but doing it in a new location and you know it's a little bit like
00:14:38.640putting someone on the freeway when they're still not comfortable driving on the street
00:14:43.800and I definitely think that we as a species still haven't really figured out how to be cool
00:14:52.300and like literally cool with planet earth and so I have genuine concerns about the push to
00:15:00.020go beyond earth and start thinking about settlements and i keep saying we here but
00:15:04.820of course like it's actually like a very small subset of the population that is thinking about
00:15:11.000using resources to go beyond earth while a larger percentage of the population i think is trying to
00:15:17.560survive the consequences of those kinds of behaviors here on earth um and and are even
00:15:25.380you know, trying to save Earth from those consequences. So of course, like the rock
00:15:30.200that is Earth will survive. But the question is whether it will still be habitable for our
00:15:34.700species in the way that it has been for the last several thousand years. I think that we really
00:15:41.520have to worry about that now, right? We're facing global warming. So what does it mean in the middle
00:15:47.080of a crisis and I purposefully say man-made crisis like global warming to say yeah now
00:15:55.620seems like a really good time to planet half and see what happens if we try and you know
00:16:01.320shape an environment on a different planet like we can even live in harmony with an environment
00:16:06.880that's already ideal for our existence how much worse does that get when we start doing
00:16:12.300things like planetscaping that's such a good point and in your book you know there's this
00:16:21.780part about really asking who profits who will perish from these expeditions and
00:16:30.100will these missions exacerbate inequalities on earth and yeah i think to
00:16:38.900push forward with this space exploration with no critical analysis of how we have treated the earth
00:16:48.080is crazy i mean it's so short-sighted and it's really what's the word i'm looking for
00:16:55.560just the hubris the ego behind that i think there's some yeah yeah if you want to riff off that
00:17:03.560Yeah, I think the hubris is exactly right, which we often hear technology discussed in terms as a kind of savior, like technology always makes life better, technology always makes the world better.
00:17:20.140But technology is also the reason that we're in this situation with global warming.
00:17:24.140So obviously, as a physicist, I'm not a Luddite.
00:17:27.420I'm a total gadget geek, personally, I really like gadgets, I'm really into that kind of stuff.
00:17:33.560But I do think that there has to be careful thought put into, you know, again, what are our values around what we do with our scientific knowledge?
00:17:45.180What are our values around the kinds of technologies we develop and deploy?
00:21:59.660Yeah, again, I mean, we know that companies, you know, quote, running wild in pursuit of development and advancement. We know what that looks like here on Earth. We've been through that. We've actually run that experiment already, right?
00:22:14.300and so people might say okay but like you know we don't have to worry about that happening in space
00:22:20.720except of course we do even in the astronomy community we're now having to deal with the
00:22:25.820fallout from these satellites that Elon Musk has decided to launch that ostensibly the official
00:22:35.140claim is that they're launching these satellites they can give internet to rural areas but I don't
00:22:40.580believe for a second that they do anything out of the goodness of their hearts right and i i i'm not
00:22:46.420sure why i should believe that that's the only reason they're launching these satellites but
00:22:50.680what we're dealing with in the astronomy community is that they're actually getting into our images
00:22:54.440so now our ground-based telescopes aren't as useful as they were and it's incredible that just again
00:23:01.500a really small group of people got to make that decision on behalf of all of humanity about what
00:23:07.140our night sky would look like, about what kinds of images that we could even take with our
00:23:11.540telescopes. And so now we actually have to divert resources to creating computational pipelines that
00:23:18.140will take these satellites out of our images. And it won't be perfect. And so actually our ability
00:23:25.920to see the night sky, to actually see the universe with clarity has already been diminished just in
00:23:31.220the last couple of years and this is only going to get worse jeff bezos's company has also been
00:23:38.180given permission to launch these kinds of satellites we're literally just gonna fill
00:23:43.340our sky with you know what i think about is it's like buying lots of little plastic trinkets and
00:23:49.860filling your house with lots of little plastic trinkets because like they're shiny and like
00:23:56.960you know we feel like they do something for us but we don't ask what it does to us or certainly
00:24:05.500the people who are doing this don't seem to care about what it does to the rest of us that they're
00:24:10.120doing this I feel there isn't good enough government regulation around this and I worry a lot
00:24:17.740about people I'm you know going out and they're gonna mine this asteroid and they're gonna be on
00:24:23.540the moon doing this and mars doing that and i actually am really grateful to the people who
00:24:29.240made the show the expanse because i think it provides actually like a painfully realistic
00:24:35.100vision of what our future could be like if you know those of us who are thinking about this
00:24:41.960don't urge more movement building to resist to resist that kind of future and of course like
00:24:48.520there's you know an incredible irony that the expanse is exclusively available on amazon
00:24:53.240on but that really tells us like in some sense like how all of these things are kind of tied
00:24:58.780together but also the same people are controlling what kinds of critique we see and when it's no
00:25:06.620longer valuable for us to have access to critical storytelling like the expanse maybe we just don't
00:25:14.600see it anymore because like jeff bezos decides he doesn't want us to see it that's a real thing