What is the shape of the Universe?

 

Everything having some materialistic properties and significance has a characteristic shape. The Earth is geoid and its orbit is elliptical. Some things round, flat, ellipsoid. Even being distorted is considered as a property of any entity. Have you ever wondered what is the shape of our Universe?

Is space empty? It is void?

Image- Forbes

According to the General Theory of Relativity, space has a significant role in every phenomenon and matter we encounter. Space is physical like a carpet on which everything like planets, stars, and galaxies are placed. The universe can bend, stretch, and expand due to gravity and the effect of matter. Is it flat? Curved? or Infinite?

There is no such a developed technique, so far, which can exactly tell us about the exact shape of the space.  We can merely guess the shape based on the curvature of flatness measured by various methods. On the basis of curvature there are three possibilities:

·         Flat or zero curvature

·         Inward curvature also called positive curvature

·         Outward curvature or negative curvature

Based on these three possibilities the shape of the universe can be

·         Flat like a sheet (If curvature is zero)

·         Spherical (positive curvature)

·         Hyperbolic (Negative Curvature), although, the other possibilities cannot be denied.

But how we measure the curvature?

Based on the cosmic microwave radiation and classical background, scientists and astrophysicist have predicted that this curvature is almost zero with deviations at some places which strengthens the Flat Universe theory.

The curvature hugely depends on the amount of mass or matter the space is holding at a particular place. The massive galaxies bend the universe due to gravitation interactions.  Considering this as a basis, the latest research paper published in November 2019, in the journal Nature, proposed the idea of space being spherical. There is a large amount of Dark Matter that has mass to such an extent, in total, which can be enough to make the curvature positive for the space.

 The quest for describing the shape of the universe is still ongoing. The more we know, the more waits to be known.