310 | Marc Kamionkowski on Dark Energy and Cosmic Anomalies
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Hello, everyone, and welcome to the Mindscape Podcast. I'm your host, Sean Carroll. I'm a uh working theoretical cosmologist, among other job descriptions. So recently there's been some news in cosmology that may or may not turn out to be a big deal. This is often how it is in science, right? You get a result, but of course by the very nature of having gotten a new result, it's a hard result to get. Otherwise he would have gotten it earlier. So the first indications that something interesting might be happening are typically
faint and you know, you're not sure whether they're on the right track or not. But There's a couple of different things that have indicated that perhaps there are kinks in the armor of the standard cosmological model, the so called Lambda CDM model, Lambda for Cosmological constant, C D M for cold dark matter. Not something that throws away the whole big bang. scenario or anything like that, but specific details might need to be tweaked. This is something that I could have done a solo episode about, but the data and exactly what the data are telling us really, really matter here. So I thought it would be better to have a true expert on the podcast. So we're happy to welcome Mark Mienkowski, who is my
colleague at Johns Hopkins and uh someone I've known for a long time. We've written papers together including suggesting the idea of dark electromagnetism. in addition to dark matter out there in the universe. We don't talk about that in this podcast. Instead we're talking about these accumulating possible anomalies in cosmology. Most recently there's a survey called the Dark Energy Spectroscopic Instrument. D E S I that um has suggested that perhaps the density of dark energy is changing with time.
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