In December 2019, half of the 2019 Nobel Prize in Physics was awarded to researchers Michel Mayor and Didier Queloz who discovered in 1995 the first out-solar planet, which orbits move around a star like the sun of ours Galaxy.
Every month that passes are discovered and announced many new out-solar planets currently numbered at 4172 that orbit around 3,095 other stars in our Galaxy. All this has been achieved by the operation of the powerful TESS (Transiting Exoplanet Survey Satellite) (NASA) and CHEOPS (CHaracterising ExOplanet Satellite) (ESA) space telescopes as well as the assistance of other research projects.
Today, more and more support the theory of having “Multiple Universes” and countless worlds-universes-mother and babies universes respectively—all of them follow different stages of life (others are at an early stage-birth, in developmental stage, in the process of maturity and in completion-end, extinction) and are called in two words “Multiple Universes”.
This vindicates the views expressed by the ancient Greek Philosopher and sage Epicurus (341-270 BC) on his philosophy and ideas for cosmology and “Multiple Worlds”. Epicurus founded Epicureanism, a highly influential school of philosophy.

Photo by Marie Lan Nguyen (2010), Source: Palazzo Massimo alle Terme, Licensed Public Domain
These views of Epicurus are described in three letters which are also the foundation stones of Epicurean philosophy. Although Epicurus written 300 works on various subjects only these three letters (the letters to Menoeceus, Pythocies and Herodotus) and two collections of quotes (the Principle Doctrine and the Vatican Sayings) saved and have survived intact.
These letters were salvaged by the biographer Diogenes Laertius (3rd century AD). These views are also supported in the famous poem “De Rerum Natura” (in English “On the Nature of Things) which is mentioned as to the nature of things and it is a didactic work about the tenets and philosophy of Epicureanism written by the Epicurean Roman poet Lucretius Carus (94-95 BC).
Epicurus said that the Moon, Earth and Sky (in Greek Uranus) and everything else are not unique. There are countless worlds and different tribes of people and beasts and for their lives, as for anything else, the law that applies is that there is a birth and an end (extinction).
Other ancient philosophers who supported Epicurus’ ideas and views were the pre-Socratic Greek-philosopher Anaximander (610-546 BC) who lived in Miletus and supported the view that the Universe was infinite to an extent, and did not accept the view that the Earth possess a central position to an infinite Universe where there are an infinite multitude of other worlds!
In turn, the pioneers Greek philosophers Leucippus (5th century BC) and Democritus (460-370 BC) equally who developed the theory of atomism of the Universe (the idea that everything is composed entirely of various imperishable, indivisible elements called atoms) supported the existence of an infinite Universe, in which there are countless worlds that had life and some of them are similar to our world, while others do not look alike at all.
In addition, they argued that in some of these worlds there is no sun and moon, while in other worlds there is a larger sun and moon than our world, while in other worlds there is more than one sun and moon respectively. Some of these worlds had no flora, fauna and water.
The age nature of these worlds follows a prescribed order of life, i.e. they followed the initial phase of their birth, then developed, then reached their peak then entered the phase of their decline and reached the final stage that was the end of their disappearance.
Metrodorus of Chios (400-350 BC) who was a disciple student and Master of Epicurus believed the same ideas and argued that since the causes are infinite then the worlds are infinite, because where the causes are infinite, the results are infinite.
All these ancient philosophers and their views today are justified by the modern discoveries of Astrophysics.



