Latest / Tamerlane: The Conqueror Who Tried to Rebuild the Mongol Legacy — Fexingo History / Tamerlane's Captive Astronomers and the Samarkand Observatory
Transcript
- Lucas: So we've talked a lot about Tamerlane bringing captive craftsmen to Samarkand — tilemakers, papermakers, armorers. But one group we haven't touched on yet are the astronomers. And this is a really fascinating part of his legacy because it ties directly into the Timurid Renaissance and even influences science in Europe. Luna: Astronomers? I didn't think Tamerlane was the type to care about the stars. Lucas: It's a great question. On the surface, Tamerlane was a ruthless conqueror, but he also had a practical side. Astrology played a huge role in his decision-making — when to launch a campaign, when to build a city. So he needed skilled astronomers. And the best in the Islamic world at that time were at the observatory in Maragha, in modern-day Iran, which had been founded by the Ilkhanid ruler Hulagu in the 13th century. Luna: That's the same Hulagu who sacked Baghdad, right? Lucas: Exactly. Hulagu was a Mongol ruler who destroyed the Abbasid Caliphate, but he also patronized science. The Maragha observatory was led by Nasir al-Din al-Tusi, one of the greatest astronomers of the medieval world. Al-Tusi developed mathematical models that later influenced Copernicus. So when Tamerlane conquered that region around 1386, he didn't just take plunder — he took the scholars. Lucas: He brought them to Samarkand, along with their instruments and manuscripts. And among those scholars was a young man named Ulugh Beg — actually, he was Tamerlane's grandson, born in 1394. Ulugh Beg grew up surrounded by these captive astronomers, and he developed a deep passion for the science. Luna: So Tamerlane's own grandson became an astronomer because of the captives? That's a pretty unexpected legacy. Lucas: It really is. After Tamerlane died in 1405, Ulugh Beg became the governor of Samarkand. He didn't just rule — he built something extraordinary. Around 1420, he commissioned a massive observatory, called the Gurkhani Zij, or the 'Royal Observatory'. It was built on a hill outside Samarkand, and its centerpiece was a giant sextant — actually a quadrant — about 40 meters in radius, set into a trench in the ground. Lucas: That sextant allowed Ulugh Beg and his team to measure the position of stars with unprecedented accuracy. They produced the 'Zij-i Sultani', a star catalogue that listed the coordinates of over a thousand stars. It was the most precise pre-telescopic star catalogue ever made — better than Ptolemy's, better than anything in Europe at the time. Luna: Forty meters? That's enormous. How did they even build that? Lucas: It was a serious engineering project. The trench was carved into the bedrock, lined with marble, and the quadrant was made of metal and wood. The whole thing was oriented along the meridian, so they could measure the altitude of celestial bodies as they crossed the sky. The accuracy was remarkable — they calculated the length of the sidereal year to within a few seconds of modern measurements. Luna: That's incredible for the 15th century. So what happened to the observatory after Ulugh Beg? Lucas: Ulugh Beg was assassinated in 1449 by his own son, who was more interested in religious orthodoxy than science. After that, the observatory fell into disrepair, and eventually it was destroyed. But the star catalogue survived — copies made their way to Istanbul and then to Europe. In the 17th century, the English astronomer John Greaves used it for his work. And there's evidence that Copernicus may have been aware of the Maragha school's models, including al-Tusi's work. Luna: So Tamerlane's conquests indirectly helped advance European astronomy? That's a wild connection. Lucas: It's one of those threads that runs through history. The observatory itself was only rediscovered in 1908 by a Russian archaeologist, who found the remains of the trench. Today, it's a museum in Samarkand. And it's a reminder that the Timurid Renaissance wasn't just about art and architecture — it was also about science. Lucas: You know, the more we dig into these captive stories, the more I realize how much of Tamerlane's empire was built on the forced transfer of knowledge. And I think that's one of the reasons these episodes resonate with listeners. Luna: Absolutely. It's fascinating and also a bit sobering. Lucas: If you've been coming with us through these conversations about Central Asia, you know this show is a labor of love — and it's completely ad-free. A couple of dollars a month is genuinely what keeps these going. If you've gotten something out of them, you can support us at buy me a coffee dot com slash fexingo. Luna: Yeah, it makes a real difference. Every little bit helps keep the research and production going. Lucas: So, back to the astronomy — one thing I find remarkable is that Ulugh Beg's observatory wasn't just a scientific institution. It was also a madrasa, a school. He gathered scholars from across the Islamic world, not just astronomers but mathematicians and theologians. The whole complex was a hub of learning. Luna: Was there any tension with religious authorities? Because astronomy and astrology could be controversial. Lucas: There definitely was. In fact, Ulugh Beg's own religious advisors eventually turned against him. The accusation of heresy was part of why his son felt justified in having him killed. But the science went on. The Zij-i Sultani was used for centuries, not just for astronomy but for navigation and calendar-making. Even today, it's considered a masterpiece. Lucas: And here's another connection: the observatory's design influenced later observatories in the Ottoman Empire and even in India. The Jantar Mantar in Jaipur, built in the 18th century, has similar colossal instruments. So the Timurid astronomical tradition had a long afterglow. Luna: I love how these episodes always tie together so many threads. It really shows how interconnected history is. Lucas: That's exactly what we're aiming for. Thanks for listening, Luna. Luna: Thanks, Lucas. And to our listeners, see you next time.