For centuries, it’s been known that Earth is a sphere,yet the flat Earth theory refuses to die. In this video, we dive into ...

Ricci map - detail from a China panel. All images via Wikipedia. In 1602, the Wanli Emperor of the Ming dynasty had a big ...

The light echoes we see in the sky can take years or even centuries to reach us. What is a light echo? At any given moment in ...

For decades, people have traveled to this field near Post, Oregon because it supposedly denotes the geographical center of ...