Astronomers knew something was wrong. Uranus was not moving exactly as expected, as though an unseen object in the darkness was pulling on it.

Instead of searching the entire night sky, mathematicians used gravity, orbital mechanics and careful calculations to predict where an unknown planet should be hiding.

Then some astronomers pointed a telescope toward that calculated position. And it was right there, Neptune.

This is the remarkable story of how mathematics revealed the existence of a world barely ever directly seen. And how Neptune later became one of the most mysterious planets explored by Voyager 2.

From a mathematical prediction to humanity's first close encounter with the far away blue giant, called Neptune.

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Nathan Hale was only 21 years old when he volunteered to become an American spy during the Revolutionary War.

Disguised as a schoolteacher, Hale went behind British lines around New York in 1776 to gather intelligence on British troops. His mission would make him one of the most famous spies of the American Revolution—and ultimately cost him his life.

Discover the story of Nathan Hale, the young American spy remembered for his courage and his reported final words: “I only regret that I have but one life to lose for my country.”

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This is the story of a long Spartan war that ends with a generation of the so called "Partheniae" being born. Led by Phalanthos into exile, they founded the colony of Taras, which later became Tarentum, a maritime hub and finally modern Taranto, a tourist destination.

This is a quick video on the adaptation of the city through the ages and even some important connections.

Charlie Kirk

We learn today about the crazy times in England and Scotland during the tudors.