Modelling of the Universe: Geocentric and Heliocentric Information 2022
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Running head: MODELLING OF THE UNIVERSE: GEOCENTRIC AND HELIOCENTRIC
Modelling of the Universe: Geocentric and Heliocentric
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Author Note
Modelling of the Universe: Geocentric and Heliocentric
Name of the student
Name of the University
Author Note
It is 21st century and the Universe is still a lot of mystery. There were too many occasions
where the debates had been made for the structure of the Universe specially the solar system.
Previously the world knew that the Earth is the centre of the Universe proposed by an ancient
Egypt cosmologist Ptolemy in second century (Cherepashchuk 2013). This is called the
Ptolemaic model or the Geocentric model of the Universe. Whereas in the late 1500s, a polish
cosmologist Copernicus first suggested the Heliocentric model (Copernican model) which says
that the sun is the centre of this planetary system. However, the Geocentric model seemed very
logical as Ptolemy successfully found a way to prove a to explain the retrograde motion of the
planets when earth passes by them which he stated the circular epicycle of the planet’s path.
Also, the epicycle’s centre moves in circular path around the earth. He described the motion as a
turning loop of the planet shows the effect (Evans and Cannan 2014). The main drawbacks of
this model were that it did not helped in categorizing planet as each planet was treated
independently. However, the model gave good predictions of the astronomical and cosmological
event for 1500 years. Later it got understood that the retrograde effects happen due to passing by
a planet just like passing a car feels like the other car is moving backwards. The Heliocentric
model described the rotation and revolution of the planets including earth very well (Swerdlow
2017). According to this model, earth orbits around the sun and the moon orbit around the earth.
Also. The sun is the centre of the system except the Universe, as there are uncountable stars in
the Universe and sun is also a star. Heliocentric reduces the complexity in tracking the order of
the planets. The planets are ordered in: Mercury, Venus, Earth, Mars, Jupiter, Saturn etc. The one
thing that Copernicus could not explain, is the (parallax distance) position shifting of the stars if
watched from the two different sides of the earth’s revolution path. Later, it was corrected and
explained by the Kepler a century later of the Geometric Model. It was also described by using a
simple example of human eye and any object. If someone sees his one figure from very close and
keeping one eye closed repeatedly, it is found that the figure changes the position due the
where the debates had been made for the structure of the Universe specially the solar system.
Previously the world knew that the Earth is the centre of the Universe proposed by an ancient
Egypt cosmologist Ptolemy in second century (Cherepashchuk 2013). This is called the
Ptolemaic model or the Geocentric model of the Universe. Whereas in the late 1500s, a polish
cosmologist Copernicus first suggested the Heliocentric model (Copernican model) which says
that the sun is the centre of this planetary system. However, the Geocentric model seemed very
logical as Ptolemy successfully found a way to prove a to explain the retrograde motion of the
planets when earth passes by them which he stated the circular epicycle of the planet’s path.
Also, the epicycle’s centre moves in circular path around the earth. He described the motion as a
turning loop of the planet shows the effect (Evans and Cannan 2014). The main drawbacks of
this model were that it did not helped in categorizing planet as each planet was treated
independently. However, the model gave good predictions of the astronomical and cosmological
event for 1500 years. Later it got understood that the retrograde effects happen due to passing by
a planet just like passing a car feels like the other car is moving backwards. The Heliocentric
model described the rotation and revolution of the planets including earth very well (Swerdlow
2017). According to this model, earth orbits around the sun and the moon orbit around the earth.
Also. The sun is the centre of the system except the Universe, as there are uncountable stars in
the Universe and sun is also a star. Heliocentric reduces the complexity in tracking the order of
the planets. The planets are ordered in: Mercury, Venus, Earth, Mars, Jupiter, Saturn etc. The one
thing that Copernicus could not explain, is the (parallax distance) position shifting of the stars if
watched from the two different sides of the earth’s revolution path. Later, it was corrected and
explained by the Kepler a century later of the Geometric Model. It was also described by using a
simple example of human eye and any object. If someone sees his one figure from very close and
keeping one eye closed repeatedly, it is found that the figure changes the position due the
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