The current scientific understanding is that our universe is incredibly vast, with a diameter estimated to be about 93 billion light years. However, it is important to note that our observable universe is limited by the speed of light, so there may be even more beyond what we can see.
There is currently no evidence or theory to suggest that there is an end to our universe. It is commonly believed that our universe is infinite and continues to expand.
There are many theories and hypotheses about the existence of other universes, but there is currently no concrete evidence to support their existence. Some physicists believe in the multiverse theory, which suggests that there may be multiple universes beyond our own.
Physicists use a variety of tools and techniques to study and gather information about our universe. This includes telescopes, satellites, and advanced computer simulations. They also use data from cosmic background radiation and observations of celestial bodies to gain insights into what exists beyond our universe.
While our understanding of the universe may not directly impact our daily lives, it has led to many technological advancements and scientific discoveries that have greatly improved our quality of life. Additionally, the pursuit of knowledge about the universe can inspire curiosity and wonder, leading to a greater appreciation for the world around us.