Hakeem Oluseyi
๐ค SpeakerAppearances Over Time
Podcast Appearances
Clickbait, yeah. Right, exactly. It's clickbait, right? So essentially what's been happening is you have the cosmic microwave background radiation, which has been a treasure trove of cosmological information. Then you have the standard way that we measure expansion. I have some object, I know- How fast it's moving? How fast it's moving away, it's redshift.
Clickbait, yeah. Right, exactly. It's clickbait, right? So essentially what's been happening is you have the cosmic microwave background radiation, which has been a treasure trove of cosmological information. Then you have the standard way that we measure expansion. I have some object, I know- How fast it's moving? How fast it's moving away, it's redshift.
And I also know its distance based on its brightness, right? And so now I can make a Hubble diagram. I fit the Planck data, I get a value of the Hubble constant.
And I also know its distance based on its brightness, right? And so now I can make a Hubble diagram. I fit the Planck data, I get a value of the Hubble constant.
I be saying stuff, don't you know, I be leaving stuff out, man.
I be saying stuff, don't you know, I be leaving stuff out, man.
Thank you, thank you.
Thank you, thank you.
So now there's new... James Webb Space Telescope data.
So now there's new... James Webb Space Telescope data.
So we had a similar problem with the ages of stars and the age of the universe, which depends on the Hubble thing, right? And so it was the cosmological data that had to be adjusted.
So we had a similar problem with the ages of stars and the age of the universe, which depends on the Hubble thing, right? And so it was the cosmological data that had to be adjusted.
That's right. Stars in the halo looked like they were older than the age of the universe, right? And the headlines were, oh, catastrophe. Oh, my God. Yeah, people like ready to give up on the universe. But then we realize, oh no, our cosmology needs to be improved. And so, you know, what happened in the 90s, really, you know, post-Kobe, that changed everything in cosmology, right? Not Kobe Bryant.
That's right. Stars in the halo looked like they were older than the age of the universe, right? And the headlines were, oh, catastrophe. Oh, my God. Yeah, people like ready to give up on the universe. But then we realize, oh no, our cosmology needs to be improved. And so, you know, what happened in the 90s, really, you know, post-Kobe, that changed everything in cosmology, right? Not Kobe Bryant.
Nobel laureates, yeah, yeah.
Nobel laureates, yeah, yeah.
Yeah, something's got to give. So I think that there's something that we don't understand. I think I'm trusting the measurements, and I think that I trust the theory. The measurements look good, don't they? The measurements look good. I was involved in supernova cosmology, right? And also weak lensing studies for looking at structure of growth and these sort of things.
Yeah, something's got to give. So I think that there's something that we don't understand. I think I'm trusting the measurements, and I think that I trust the theory. The measurements look good, don't they? The measurements look good. I was involved in supernova cosmology, right? And also weak lensing studies for looking at structure of growth and these sort of things.