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's appetite for collecting people — his captive artisans, his captive scientists, even that hostile historian Ibn Arabshah. But one group I think we haven't really touched on are his captive astronomers. Luna: Astronomers? That feels like a very specific sort of plunder. Lucas: It is. And it's actually a really revealing part of how he thought about power. Tamerlane wasn't just interested in stars for their own sake — he wanted to control the heavens the way he controlled the earth. If you could predict eclipses, calculate calendars, cast horoscopes for military campaigns, that was a form of authority. It told people you were divinely favoured. So when he conquered a city like Damascus or Tabriz, he didn't just take the gold and the silk. He took the scholars. Specifically, the ones who could read the sky. Luna: So he was basically assembling an all-star team of medieval astronomers by force. Lucas: Exactly. And the key figure here is a man named Jamal al-Din. He was a Persian astronomer who had worked at the Maragha observatory in modern-day Iran — that was the great scientific centre built by Hulagu Khan, the Mongol ruler who sacked Baghdad. Maragha had been the Hubble of its day. But by Tamerlane's time, it was in decline. When he swept through the region, he made sure to capture the remaining scholars and send them to Samarkand. Jamal al-Din was one of them. Luna: And what did Jamal al-Din do in Samarkand? Lucas: He created what became known as the Zij-i Sultani — the 'Sultan's Astronomical Tables'. This was a massive star catalogue and set of mathematical tables for predicting planetary positions, lunar phases, eclipses. It was based on the work of earlier Greek and Islamic astronomers, but refined using new observations. Tamerlane apparently took a personal interest. He'd have Jamal al-Din calculate auspicious times for battles, interpret celestial omens. There's a story, probably apocryphal but still telling, that in 1404, when Tamerlane was planning his invasion of China, a lunar eclipse was interpreted as a sign that he would succeed. The astronomers were key to that narrative. Luna: So he used astronomy as propaganda. Lucas: Absolutely. But here's the interesting thing — it wasn't just propaganda. The Zij-i Sultani was a genuinely important scientific work. It was used for centuries. And it set the stage for what came after Tamerlane. His grandson Ulugh Beg, who we've mentioned before, built a massive observatory in Samarkand and produced even more accurate star tables. Ulugh Beg was essentially raised in that scientific environment that Tamerlane had forcibly created. The captive astronomers became the teachers of the next generation. Luna: So in a weird way, the forced relocation of scholars ended up creating a scientific golden age. Lucas: Yeah, it's a dark sort of legacy. But it's real. The scholars Tamerlane brought to Samarkand weren't just curiosities — they were actively working. They built instruments, they made observations, they trained students. We have accounts from the Spanish ambassador Ruy González de Clavijo, who visited Samarkand in 1403, and he mentions seeing astronomers at work. He describes a kind of proto-observatory, though it wasn't as grand as what Ulugh Beg built later. But the foundation was there. Luna: And all of this is happening while Tamerlane is also presenting himself as a pious Muslim, right? How did that square with his patronage of astronomy? Lucas: That's a great question. Astronomy in the Islamic world had a complicated status. It was seen as useful for determining prayer times, the direction of Mecca, the lunar calendar. But astrology — predicting the future, casting horoscopes — was sometimes condemned as un-Islamic. Tamerlane navigated that by framing it all as science. He'd say he was just trying to understand God's creation. And he was careful to have his astronomers cite Quranic verses that encouraged the study of the heavens. Plus, he had the authority to shut down any criticism. But there were tensions. Ibn Arabshah, the Damascus-born historian who hated Tamerlane, makes a point of mocking his reliance on astrologers. He calls them charlatans. Luna: So even his enemies used the astronomy against him. Lucas: Exactly. But the deeper point is that Tamerlane's scientific program was part of his bigger project — making Samarkand the centre of the world. He brought scholars from Damascus, from Tabriz, from Delhi, from Baghdad. He wanted his capital to rival any city in the Islamic world. And in terms of astronomy, it worked. For a generation, Samarkand was the cutting edge. Until the empire fragmented after his death. Then the observatory fell into disrepair, the scholars dispersed. But the tables they produced — the Zij-i Sultani — survived. They were still being copied in India two centuries later. Luna: So that's the footnote to Tamerlane's legacy: not just pyramids of skulls, but star charts that outlasted him. Lucas: Yeah. And I think it's a reminder that even the most brutal rulers can accidentally create things of lasting value. Tamerlane didn't set out to advance science — he set out to demonstrate his power. But in the process, he built a scientific community that produced real knowledge. It's one of those ironies of history.