The history
For centuries doubts prevailed about the real world shape. Although many thinkers have presented several arguments which sustained that the Earth was round, the final proof came only in the sixteenth century, with the sea voyages of Portuguese and Spanish.
Ferdinand Magellan was the first to undertake a voyage of circum-navigation. The Portuguese sailor, in the service of the Spanish Armada, set sail from Seville in 1517, with a fleet of 5 ships and crew of 234 men, with the goal of reaching the Moluccas islands sailing to the West.
Magellan was the first to cross the strait now known by his name (the Strait of Magellan) and the first European to navigate the Pacific Ocean. The explorer would die in the Philippines, following an ambush, the expedition was then led by Juan Sebastián Elcano.
The trip was very trouble and only one of the ships, with 18 men aboard, returned to Spain, three years after departure. Due to high losses of shipment any of the seamen who ended the journey got paid.
The Travel Bug (TB).
The travel bug is an Astrolabe, which was used by sailors such as Magellan, to determine the position of the stars in the sky and thus determine the position of the ship in the ocean. You can say that it is the ancestor of GPS.
The TB started its journey in the most of western cache of Europe (Roca’s cape, POR) and its goal is to make a trip around the world by traveling to the East, proving that the Earth is round.