# The Ottoman Empire's Astronomical Legacy

An episode of [The Ottoman Empire and Its Influence on Modern Europe — Fexingo History](https://invisiblenetwork.ai/podcast/1895344416), 30 Aug 2026, 8:31.

Audio: https://audio.fexingo.com/history/the-ottoman-empire-and-its-influence-on-modern-europe/episode-0219.mp3

In this episode, Lucas and Luna explore the Ottoman Empire's often-overlooked contributions to astronomy, from the observatory of Taqi al-Din in 16th-century Istanbul to the empire's role in preserving and advancing Islamic astronomical knowledge. They discuss the instruments, the scholars, and the political forces that shaped Ottoman science, including the destruction of the Istanbul Observatory in 1580 and the later revival in the 19th century. Along the way, they touch on the enduring influence of Ottoman astronomy on modern science and how it challenges our assumptions about 'Islamic' and 'European' intellectual history. A light-hearted conversation about a serious topic, this episode offers a fresh perspective on a civilization too often defined by its military and political power. #OttomanAstronomy #Taqiuddin #IstanbulObservatory #IslamicScience #HistoryOfScience #OttomanEmpire #Astrolabe #Urdi #Copernicus #OttomanScience #Rasathane #TychoBrahe #Galileo #Suleiman #MuradIII #OttomanHistory #FexingoHistory #History Keep every episode free: buymeacoffee.com/fexingo

## Transcript

Lucas: So we've talked a lot about the Ottomans through their military, their law, their art, their coffee. But one thing we haven't really touched on is their science. And I want to fix that today because, honestly, the story of Ottoman astronomy is one of those things that just gets completely overlooked.
Lucas: It's not just that they had some scholars looking at the stars. They had a moment in the 1570s where they built one of the most advanced observatories in the world, with instruments that rivaled anything in Europe. And then, almost as quickly, they tore it down.
Luna: Wait, they tore down their own observatory? That seems counterproductive.
Lucas: Yeah, it's a wild story. But let me set the stage a bit. You know how we've talked about Suleiman the Magnificent and his patronage of the arts? Well, his grandson, Murad III, was also interested in science, and he brought to court a man named Taqi al-Din.
Lucas: Taqi al-Din was born in Damascus in 1526, and he was a polymath — astronomer, mathematician, clockmaker, even a physician. He studied in Cairo and then traveled, and eventually he caught the attention of the Ottoman court. Murad III was fascinated by astronomy, and he gave Taqi al-Din the funds to build an observatory in Istanbul.
Lucas: So in 1577, the Istanbul Observatory — they called it the Dar al-Rasad al-Jadid — was completed. And it was not a small thing. We're talking a building with multiple levels, a library, quarters for the astronomers. And Taqi al-Din filled it with instruments that were, in many cases, more precise than what Tycho Brahe was using in Denmark at exactly the same time.
Luna: Okay, that's impressive. What kind of instruments are we talking about?
Lucas: He had a giant mural quadrant — like a huge quarter-circle that let them measure star positions with incredible accuracy. He had an armillary sphere, which is that model of the celestial spheres with rings that you see in old illustrations. And he had a mechanical clock. That was huge because timing observations of eclipses and occultations requires knowing the time to the second, and he was using a clock to do that — something that was just starting to catch on in Europe.
Lucas: Taqi al-Din also wrote extensively. He produced tables of star positions that were more accurate than many European ones at the time. He even corrected some of the errors in the older Islamic astronomical tables, like the Zij of Ulugh Beg, which was already considered the gold standard for a hundred years.
Luna: So what happened? Why did they tear it down?
Lucas: Well, there are a few theories, and it's a bit contested. The most common story is that Murad III's chief advisor, Sokollu Mehmed Pasha, had a falling out with Taqi al-Din. But also, there was a big plague outbreak in 1579, and the observatory was seen as a bad omen. People said that looking at the heavens was prying into God's domain, and the sheikh ul-islam — the top religious authority — issued a fatwa against it.
Lucas: And then there's the political angle. The Ottoman Empire was at war with Persia, and some of the observatory's predictions were seen as unfavorable. So in 1580, the order came: the observatory was demolished. And Taqi al-Din, his work, his instruments — it was all lost, or at least scattered.
Luna: That's such a shame. All that knowledge, just gone?
Lucas: Yeah, it's one of those 'what if' moments in history. But here's the thing — the knowledge wasn't entirely gone. Taqi al-Din's books survived, and they influenced later scholars in the Islamic world. And there's a fascinating connection to Europe. Some historians have argued that Taqi al-Din's work on planetary theory, which was based on earlier Islamic models, might have influenced Copernicus. The idea is that the mathematical models developed by astronomers like Ibn al-Shatir in the 14th century were known in Istanbul, and Taqi al-Din was working directly in that tradition. But the link to Copernicus is still debated — it's one of those things where the evidence is circumstantial.
Lucas: But the broader point is that Ottoman astronomy didn't just stop. They had a tradition of using astronomical instruments for practical purposes — for timekeeping, for determining the direction of Mecca for prayer, for the calendar. And that continued even without a grand observatory.
Luna: So it wasn't like they just gave up on science entirely.
Lucas: Exactly. In fact, there was a revival in the 19th century. They built a new observatory, the Rasathane-i Amire, in 1868, and they brought in French instruments and hired European astronomers to work alongside Ottoman ones. So there's this whole arc from the high point in the 1570s, through the destruction, and then this later renaissance.
Lucas: And that's something we should keep in mind: the story of Ottoman science is not just a decline from a golden age. It's more complicated than that.
Luna: I love how you always find these angles that make me rethink the whole empire.
Lucas: Well, that's the fun of it. And you know, speaking of rethinking things, I wonder if you've ever considered that the show is literally free for you to listen to. And that's because of listeners like you who decide that, if a conversation like this is worth something, they can support it through a small donation. If you feel like it, the link is buy me a coffee dot com slash fexingo. No pressure, but it does help keep us going.
Luna: Yeah, it's a nice way to say thanks without having to commit to a subscription. We appreciate anyone who does.
Lucas: So, back to the stars. Another thing that's often overlooked is that Ottoman astronomers were also doing serious work on comets. There's a famous observation of the comet of 1577 — the same one that Tycho Brahe used to prove that comets were beyond the Moon. Taqi al-Din observed that comet too, from Istanbul, and he made meticulous records of its motion. His data was actually pretty good, though he didn't draw the same conclusions as Brahe. But it shows that Ottoman astronomers were right there in the middle of the action.
Lucas: And there's also the role of the Ottoman Empire as a patron of translation. They brought in texts from Persian, from Arabic, from Greek, even some from Latin. They translated Ptolemy's Almagest, they had versions of Euclid. So they were engaging with the full canon of ancient and medieval science.
Luna: So it's not like they were cut off from European developments either.
Lucas: Right, there was exchange. And that's something I think we should emphasize: the intellectual world of the 16th century was connected. It wasn't just Europe vs. the Islamic world. There was trade, there were travelers, there were letters. And astronomy was one of those fields where ideas moved across borders.
Lucas: But the destruction of the observatory is still a powerful symbol. It's often cited as an example of religious conservatism shutting down science. And while there's some truth to that, it's not the whole story. The decision was as much political as religious. And it's not like the Ottomans never looked at the sky again. They just had to do it in a more low-key way, often within the context of the state's need for accurate calendars and prayer times.
Luna: Hmm, so it's a nuanced story.
Lucas: Yeah, and that's what makes history so interesting. If you look at the long arc, you see that the Ottomans were part of a global scientific conversation, and they made contributions that we're still uncovering. Taqi al-Din's instruments, for instance, were so sophisticated that some historians have called him the equal of Tycho Brahe. And it's a tragedy that his work is so little known outside of specialist circles.
Lucas: So next time you look up at the stars, maybe think of Taqi al-Din, sitting in his observatory in Istanbul, mapping the heavens with a clock and a quadrant, and being part of that same human story of curiosity and discovery.
Luna: That's a beautiful thought.
Lucas: And if you want to hear more about the Ottomans' place in the wider world of science and ideas, we've got plenty of episodes to explore. But for now, I think that's a good place to stop.

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