GENERAL KNOWLEDGE

Detailed explanation-1: -The observable universe can be thought of as a sphere that extends outwards from any observation point for 46.5 billion light-years, going farther back in time and more redshifted the more distant away one looks.

Detailed explanation-2: -The simplest version of the inflationary theory, an extension of the Big Bang theory, predicts that the density of the universe is very close to the critical density, and that the geometry of the universe is flat, like a sheet of paper.

Detailed explanation-3: -Instead of being perfectly round like a globe, the universe might be a bit stretched in shape like an oval. The newly proposed shape could be caused by a magnetic field that pervades the entire cosmos or defects in the fabric of space and time, researchers said.