The Cosmos that extends to the four ends

Antonis Antoniou gives a lecture upon the most discussed problems of the modern cosmology and astrophysics

lectures | research - science | talks

On Friday, February 14th , Dr. Antonios Antoniou, PhD in Astrophysics, National and Kapodistrian University of Athens, gives a lecture titled “The Cosmos that extends to the four ends” at Herakleidon Museum

We live on a wonderful planet. We experience a feast of colors and sounds, a divine nature. We observe an exquisite sky, a wonderful Universe, a beautiful Cosmos. But what form does this Creation have? Is it infinite? Do we perceive it as a whole?  Can we record it with instruments, which are, as we know, an extension of our senses and human physiology? These questions represent some of the most discussed problems of the modern cosmology and astrophysics.

Nowadays, we know undoubtedly, that the Universe, as it’s described by the General Theory of Relativity, is a huge Super-Universe with four dimensions. Three of them are spatial and the fourth one is the time dimension. It is the so called “space-time continuum”. But which geometry describes this space-time continuum? Is the geometry of our school years, the so called Euclidian Geometry, able to describe this four dimensional Super-Universe? The modern cosmology says “No”. This “space-time continuum” is described by another generalized geometry. It is described by the so called Riemann-Geometry. This geometry has a very important and basic property: If we cut a tiny piece of the space which is described by it, this piece behaves as Euclidian- Space and therefore is perceived by our senses and can be recorded by our instruments.  

So, our human physiology perceives a very tiny three dimensional space of a four dimensional non-Euclidean Super-Universe, which exists but is not observable. Our astronomical and generally our scientific observations are involved in this tiny space. This is our observable Universe.

Event info
Friday, February 14th, 18:30
Free Admission
Herakleidon Museum
16 Herakleidon st. Thissio

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