In part five of this episode on "The Discoverers," Galileo is warned. His belief that the Earth revolves around the sun is sacrilegious. Giordano Bruno, who claimed this fact, was burned as a heretic by the Inquisition Tribunal.

Galileo is about to throw caution to the wind and reveal his startling discoveries about planet Earth.

Galileo is under close scrutiny because of his Copernican views. Unfazed, he carries on his research and his teachings. Will the Inquisition bring his demise or will his powerful friends, Pope Urban VIII among them, protect him?

Galileo faces an uncertain future. Behind the scenes are political and religious intrigues and enemies plotting his downfall. The Pope, until now sympathetic to Galileo, has a change of heart. Under pressure from all sides and insulted by his latest works, The Dialogue Concerning the Two Chief World Systems, portraying the Church's view through the character Simplicio (Simpleton), the pope finally sends Galileo to the Inquisition Tribunal.

Galileo is in prison. He tries one more time to prove his theories to his inquisitor. But he finally recants during the trial saying the famous sentence: "and yet... it turns"

It's back to the past, with the Once Upon a Time series. How did America get its name? Take a trip back to Renaissance Italy in this first episode of The Explorers to find out.

He may not know it yet, but Amerigo Vespucci's life is about to change. Though he works as a successful banker, Amerigo feels restless and aspires to greater things. Luckily, Lorenzo de' Medici has offered him the opportunity of a lifetime: a trip to Spain to help Christopher Columbus prepare for an expedition to the Indies.

Amerigo Vespucci sails for the New World to explore new territories discovered by Columbus, draw accurate maps, and find the true route to the Indies. As his ship approaches "Little Venice," or Venezuela, the crew comes into contact with some local natives.

The explorers are exploring a new territory, full of lush vegetation, exotic wildlife, and, to the joy of a few explorers, gold! Perhaps they could use a lesson on the dangers of greed...

Amerigo Vespucci sets foot for the first time on the American continent. He collects all manner of plants and animals, only to drop them into the Amazon River.

Amerigo and his crew continue exploring the New World. Their water is almost gone. Fortunately, the river they're sailing on turns out to be the Amazon, so they won't die of thirst after all.

Vespuccia or America? In the last episode of this fun cartoon, we find out how the name of the new continent now known as "America" came about.

In this episode of the "Once Upon a Time" animated series on world explorers, we begin to learn the history of Cairo and the Nile River in Egypt.

In the second segment of this episode of Les Explorateurs (The Explorers), James Bruce, our intrepid adventurer, encounters some pirates while trying to reach the source of the Nile.

As James Bruce and his crew arrive in Massawa in hopes of meeting the king, they are thwarted by the king's messenger, who was ordered not to let in any foreigners. But since the royal palace is in need of a doctor, and Bruce happens to be one, he may be forced to make an exception....