Timeline of cosmological theories

Cosmological theories are ideas that scientists have about how the Universe began, how it works and how it might end. Timeline of cosmological theories is the timeline from when these theories started and how they developed over time.

In the very beginning, people thought that the Earth was the center of the Universe and everything else went around it. This is called the geocentric model and it was believed for a long time.

In the 1500's, Nicolaus Copernicus proposed that the Sun was the center of the Universe instead of the Earth. This is called the heliocentric model and it eventually became widely accepted.

In the 1700s, Immanuel Kant proposed that our entire Universe is just one of many others. He called this the plurality of worlds.

In the early 1900s, Albert Einstein proposed the theory of General Relativity. This theory states that gravity is caused by the bending of space due to the presence of matter.

In the mid-1900s, Edwin Hubble discovered that the Universe is expanding. This led to the Big Bang Theory, which states that the Universe began with a huge explosion and has been expanding ever since.

Today, scientists are trying to figure out what caused the Big Bang and how the Universe will continue to evolve. They are also looking into the possibility of parallel universes, black holes, and dark matter.