Theories about the earth being round or flat

Introduction

The idea that the earth is round might seem like an obvious one, but it wasn’t always so. In fact, there were many different theories about the shape of the planet before we knew for sure. These theories are known as geocentricism or flat-earth theory. The idea of a round Earth dates back to ancient Greece, but it wasn’t accepted until later in history when Christopher Columbus sailed west and discovered America—proving that the world was indeed round!

Aristotle’s world was based on the idea that everything with a rational soul was made from the same substance, which he called the “prime matter.”

When Aristotle lived, most people believed that the Earth was flat. Aristotle’s world was based on the idea that everything with a rational soul was made from the same substance, which he called the “prime matter.” This idea is similar to what we now know as atoms or molecules.

The idea of a round earth dates back to ancient Greece.

The idea of a round earth dates back to ancient Greece. The idea of a flat earth was the dominant theory until the 15th century, when it was challenged by Nicholas of Cusa and then finally refuted by Ferdinand Magellan’s voyage around the world in 1522-23 (see next section).

The first person to use an actual globe in teaching was Christopher Columbus. He used one while teaching geography at a university in Lisbon, Portugal; he also wrote about his use of globes in his journal entry for October 1st 1492: “I have seen under my feet all that is known as land or terra firma.”

In order to get around the flat-earth problem, Ptolemy came up with his own model of the universe.

Ptolemy was a Greek mathematician, astronomer and geographer who lived in the second century CE. His model of the universe was based on the idea that the earth was at its center, with all other celestial bodies orbiting around it. This was known as geocentricism (or “geocentrism”).

In his system, Ptolemy proposed that there were seven spheres surrounding our planet: one for each of Saturn’s moons; one for Jupiter’s moon Io; one for Mars; another for Earth; then two more spheres containing Venus and Mercury respectively before finally arriving at Comets’ Cloud Sphere which has no stars but only comets passing through it.

Until the 15th century, most European thinkers believed that the earth was flat.

The flat earth belief was widespread and held by most European thinkers until the 15th century. The belief was based on the Bible, common sense, observation, and religious beliefs.

• The Bible said that God created Heaven and Earth in six days (Genesis 1:1-2:4). On the seventh day he rested from his work (Genesis 2:2-3). Since then no one has seen or can see God creating anything new because he is invisible to all humans without exception (Exodus 33:20-23). So if you think about it logically there must be another side of our planet beyond our horizon where God lives with other angels who guard heaven’s gate against intruders like Satan who rebelled against him after being expelled from heaven into hell where he has been ever since then trying unsuccessfully every now and again to get back inside through deception or force depending on whether we’re talking about good people being deceived by lies into doing evil things under duress such as terrorism attacks or bad guys like Hitler using guns & bombs but always failing miserably thanksgiving turkey dinners

The idea of a spherical earth came from many sources including a Greek philosopher named Pythagoras.

Pythagoras was a Greek mathematician and philosopher who lived in Samos, Greece around 570 BC. He is best known for his theorem about right triangles, but he was also the first person to use a globe for teaching.

In ancient times it was common for scholars to believe that the earth was flat because this idea fit with what they saw every day: people walking on land or sailing on water; buildings rising up from the ground; birds flying overhead (which seemed like they were going up into space). However, there were some who disagreed with this idea based on their own observations and experiments. These people developed theories about how our planet actually works–and those theories eventually led us today’s understanding of how Earth really looks!

The first person to use an actual globe in teaching was Christopher Columbus.

The first person to use an actual globe in teaching was Christopher Columbus. In his youth, he came across a copy of the book Imago Mundi (meaning “image of the world”) by Pierre d’Ailly and quickly became fascinated by it. The book contained detailed descriptions of various countries and their inhabitants, including those found on other continents.

Columbus used this knowledge to convince King Ferdinand II and Queen Isabella I of Spain that there were other lands beyond Europe; but even though he had been convinced by d’Ailly’s text about what lay beyond his home continent’s borders–and thus convinced others as well–this did not mean that everyone else shared his view on the shape of our planet at this time!

The idea of a round earth dates back to ancient Greece but wasn’t accepted until later in history

The idea of a round earth dates back to ancient Greece. Aristotle’s world was based on the idea that everything with a rational soul was made from the same substance, which he called “prime matter.”

In his book On the Heavens, Aristotle described his observations of celestial bodies and their movements around Earth as if they were going around in circles or spirals. The stars were not at all like our sun or moon; rather than moving across our sky every night (as we see them do), they were fixed in place above us at great height–and it was possible for them to move closer together or farther apart depending on whether they were nearer or farther away from us on their respective orbits around our planet’s center.

Conclusion

The idea of a round earth dates back to ancient Greece but wasn’t accepted until later in history. In order to get around the flat-earth problem, Ptolemy came up with his own model of the universe which was based on spheres rotating around each other at different speeds.