The key difference in between geocentric and heliocentric models is the according come the geocentric model, the earth is at the centre of the cosmos or world whereas follow to the heliocentric model, the sunlight is the centre and also planets revolve roughly the Sun.

Geocentric and also heliocentric models are really important in astrophysics. These models are advantageous in explicate the occurrence of Sun and planets in the Universe.

You are watching: Explain the difference between the geocentric and heliocentric models of the solar system.

CONTENTS

1. Overview and crucial Difference2. What is Geocentric Model3. What is Heliocentric Model4. Side by side Comparison – Geocentric vs Heliocentric Models in Tabular Form5. Summary

What is the Geocentric Model?

Geocentric model, in astronomy, is a concept that explains that planet is the centre of the Universe. In other words, this is a suspended description of the universe with earth at the centre. Under this model, the Sun, moon, stars, and also other planets orbit approximately the Earth. This to be the predominant summary of the cosmos in many ancient civilizations, including Aristotle in classical Greece.


Figure 01: an Illustration that the ancient Geocentric Model


There room two major observations the were supplied in emerging this model:

The Sun appears to revolve approximately the earth once per day as soon as observing from almost everywhere on Earth.An earthbound observer watch no motion of Earth due to the fact that it feel solid, stable and stationary.

Ancient Greeks, old Romans, and medieval thinkers tried to incorporate the geocentric model with the principle of spherical planet instead that the design of flat Earth. This model gotten in the Greek astronomy and also philosophy at really early times. E.g. Pre-Socratic philosophy. In 4the century BC, Plato and also his college student Aristotle emerged a structure for Universe based upon the geocentric model. It had the planet as a ball which is stationary in ~ the centre of the Universe. There to be the stars and also planets carried roughly the planet on spheres or circles that were arranged in the bespeak of Moon, Sun, Venus, Mercury, Mars, Jupiter, Saturn, and also some other fixed stars.

What is the Heliocentric Model?

Heliocentric model in astronomy is an huge model in which the Earth and also planets move roughly the sun at the center of the Solar system. This model is opposing of the geocentric model. The principle of earth revolving approximately the sunlight was developed as early as the 3rd century BC by Aristarchus the Samos. However, a suitable mathematical heliocentric model was not proposed till the 16th century. It was presented by the mathematician, astronomer, and Catholic cleric Nicolas Copernicus. This was named as Copernicus revolution. This advance led come the following advent of elliptical orbits by johannes Kepler and also supporting observations made using a telescope by Galileo Galilei.


Figure 02: Geocentric vs Heliocentric Models


Later, the scientists, william Herschel and also Friedrich Bessel make observations and also realized that the sun is no the centre of the Universe but only in the Solar system.


What is the Difference between Geocentric and also Heliocentric Models?

Geocentric and also heliocentric models are an extremely important in astrophysics. These models are useful in describing the incident of Sun and planets in the Universe. The an essential difference between geocentric and also heliocentric models is that geocentric model argues the earth as the centre of the cosmos or world whereas the heliocentric model suggests the sun as the centre and also planets revolve about the Sun.

Below is a an overview of the difference between geocentric and also heliocentric models in tabular form.

Summary – Geocentric vs Heliocentric Models

The crucial difference between geocentric and heliocentric models is the according to the geocentric model, the planet is at the center of the cosmos or world whereas follow to the heliocentric model, the sunlight is the centre and planets revolve about the Sun.

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Reference:

1. “Geocentric and also Heliocentric Models.” Astronomy, available here.

Image Courtesy:

1. “Bartolomeu Velho 1568” by Bartolomeu Velho – Own occupational (Public Domain) via Commons Wikimedia2. “Geoz wb en” – Original picture by Niko LangSVG version by User:Booyabazooka – Own work-related (CC BY-SA 2.5) via Commons Wikimedia


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