This is an I-Hart podcast.

Guaranteed Human.

When and how did we learn that the sun is at the center of the solar system?

And if distance and location are just relative, what does center mean anyway?

There's a commonly told story about all of this, how Copernicus and Kepler overthrew geocentrism

with better data and clever math. But as usual, that story is missing a lot of the fun nuance.

Did you know that it wasn't just geocentrism versus heliocentrism,

but that there was a third even weirder theory in the mix that also explained the data very

nicely? And that it was shockingly recently that we were able to nail any of this down?

Understanding the true history of science is super fun because it

shows you how puzzles are actually sorted out and how things seem obvious in hindsight, but when

you're standing at the forefront of human knowledge, the path forward is very unclear.

Welcome to Daniel and Kelly's Extraordinary Universe.

Music Welcome to Daniel and Kelly's extraordinary universe. Hello, I'm Kelly Wienersmith. I study parasites and space, and I'm looking forward to seeing how many different incorrect ways I can say Tycho Brahe today.

That's probably one.

Hi, I'm Daniel. I study particles and aliens. And even though I speak Danish, I'm not going to try the correct pronunciation of Tico Brahe's name.

So that wasn't it.

That was not it because that's like a Latinization of his name, which has some other Danish formulation, which I've heard Dane say, and I'm not going to try to reproduce because it uses one of those many Danish vowels that doesn't exist in English.

And you said Tihoh?

Tico Brahe is the like the Latinization of it.

But yeah, it's very different in the actual Danish.

Okay, I was closer than I think probably any of us would have guessed.

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