How the universe is truly infinite

The universe was extremely hot and dense, yet it was also expanding and cooling. It was made up of matter, antimatter, and radiation. The volume of our visible universe has expanded to 46 billion miles in radius by now, and the limit of what we can gauge corresponds to the light that can currently reach our senses. hat's a long way, but it's not indefinitely far; it's just the boundaries of our observation. What's on the other side of that? How about the Universe that is not observable? Is there a method to determine whether the cosmos we live in is finite or infinite, or even if there is a boundary to what can be evaluated and whether what we commonly refer to as "the Universe" continues to exist forever? We eventually find ourselves staring into time as we scan out to greater distances. The closest galaxy, located approximately 2.5 million light years distant, appears to us to have been 2.5 million years ago because light takes that lengthy journey from the point of emission to where we are sight. Galaxies located further away seem to be the same as they were billions, hundreds, or even millions of years ago. The light we see from the Universe comes from increasing younger people because we gaze farther and farther into space. Therefore, we may measure the evolution of the Universe across its history as well as look into terms of distance .In addition to being chilly and clumpy, the universe is currently expanding and gravitating. When we examine  All of the light that goes throughout our galaxy is stretched in wavelength due to its expansion. The wavelength gets colder and lose heat as it stretches. This indicates that, based on measurements of distant objects in the Universe, the Universe was hotter in past ages.