Why the evidence is now so strong

6:59>> Yeah, exactly. And so, I think that's when people started becoming really convinced that something like Dark Matter exists, it was because of things like galaxy rotation curves, the you know, the observation that stuff appeared to be being pulled by by more gravity than you could account for based only on what you could see, based only on starlight. >> That That makes sense. And so, this is This is why sometimes, and this kind of begins to dovetail with your area of research, you know, I've heard it described that, you know, Dark Matter as the the invisible structure of the universe. And And the reason we

7:40say that is, you know, when we look at the the the spin of these galaxies, um it the the speed at which the rotation is happening we're based on what we can see, it should not be possible is the point. Based on purely what we can look at through these telescopes and these instruments, the some of the speed or acceleration or the way in which it operates doesn't make sense unless there is something else there. >> That's right. Yeah, and that was the early evidence. >> Okay. >> Now, today we have, you know, we've made that kind of observation, but on, you

8:23know, vastly different scales and in different environments. So, from the large-scale structure of the universe, the cosmic microwave background, all of these things that are independent of each other, they all point to the existence of some form of matter that only interacts gravitationally. >> interesting. So, it's not simply that we've looked at either like one type of object, a celestial object, or one subset of celestial objects. We've now looked at an array of these different things, and all of them point to there there being a missing variable in the equation. >> Yeah, that's right. So, it's it's the fact that you have lots of independent lines of evidence, right? You just have

9:04one experiment, maybe, you know, okay, maybe you don't understand galaxies that well, and that's why you you don't understand the rotation curve, right? But once you start having lots of different phenomena that are all you know, reasonably well explained by the existence of dark matter, that's when it becomes really compelling. And that's why we're trying to figure out what it is, and we're not so much anymore focused on determining whether it exists. >> This is actually a a great transition point. So, we're now at the point, and this is where your research comes in, where we've identified that there is a there there. And now we are trying to better

9:46characterize what it actually is, the structure, its component parts. Are there Are there dark matter particles? Um, you know, and and and so