The concept of the "edge" of the observable universe can be a bit tricky to grasp. The observable universe refers to the portion of the universe that we can currently observe given the limitations of the speed of light and the age of the universe.
Since light travels at a finite speed, the farther we look into space, the further back in time we are observing. This means that the observable universe is like a cosmic time capsule, allowing us to see objects as they existed in the past.
However, it's important to note that the observable universe doesn't necessarily have a physical edge or boundary that we can point to. It's not as if there is a physical "wall" beyond which we cannot see anything. Instead, the observable universe extends as far as the light from distant objects has had time to reach us since the beginning of the universe.
The current estimate for the radius of the observable universe is about 46.5 billion light-years, which means the most distant objects we can observe are roughly 46.5 billion light-years away from us.
Outside the observable universe, there could be much more universe that we cannot currently see due to the limitations of light travel. This region is often referred to as the "unobservable universe." The actual size and nature of the unobservable universe are still a subject of scientific inquiry and speculation.
In summary, the edge of the observable universe is not a physical boundary but rather the limit of what we can currently observe based on the age of the universe and the finite speed of light. The unobservable universe lies beyond our current observational reach, and its properties and extent are still a topic of scientific exploration.