In 1936, British archaeologist Walter Emery unearthed a strange stone disc from a 5,000-year-old Egyptian tomb. Decades later, it went viral with over 23 million people convinced it was a component from an alien spacecraft. The Sabu Disk's three curved lobes bear an uncanny resemblance to a modern pump impeller, and conspiracy theorists from Eric Von Däniken to TikTok creators have used it as proof of ancient advanced technology. But what does the actual archaeology say? In this episode, we dive deep into First Dynasty Egypt, the extraordinary tradition of stone vessel craftsmanship that produced tens of thousands of masterpieces, and the real engineering reasons why the impeller theory is physically impossible. We examine every major theory -- impeller, flywheel, anti-gravity device, alien hyperdrive -- and show why the true story of a human craftsman carving impossible geometry from brittle stone with copper tools is far more astonishing than any extraterrestrial explanation.

Discovered in the necropolis of Saqqara, Egypt, in 1898, a small wooden object shaped like a bird has sparked decades of debate. Known today as the Saqqara Bird, some researchers have claimed it represents an early model of a glider, evidence that ancient Egyptians may have experimented with flight long before modern aviation.

But does the evidence support that claim?

In this episode of History Undisclosed, we examine the artifact’s discovery, its construction and proportions, the aerodynamic experiments performed on replicas, and the competing interpretations proposed by archaeologists and engineers. We explore whether the object was truly designed with flight in mind, or whether modern observers are projecting technological assumptions onto an ancient ceremonial or symbolic item.

Discovered near modern-day Baghdad in the 1930s, a small clay vessel containing a copper cylinder and an iron rod sparked one of the most enduring debates in alternative archaeology. Could this object, now known as the Baghdad Battery, represent evidence of ancient electrical knowledge?

In this episode of History Undisclosed, we take a careful, evidence-based look at the artifact’s discovery, construction, and historical context. We examine the experiments that claim it could generate electricity, the serious objections raised by archaeologists and engineers, and the alternative explanations that often receive far less attention.