The furthest observable point of our universe, often referred to as the observable universe or the cosmic horizon, does not have a well-defined "edge" as far as our current understanding of cosmology suggests. It is important to note that the observable universe is the portion of the universe that we can potentially observe from our vantage point on Earth.
The observable universe is determined by the finite speed of light and the age of the universe. Since the universe has a finite age (approximately 13.8 billion years), the light from distant objects has had a limited amount of time to reach us. Consequently, we can only observe objects that are located within a certain distance from us, corresponding to the distance that light has traveled since the beginning of the universe.
If you were to view the observable universe from above or below, it would appear as a sphere around the observer, with Earth located at its center. This sphere represents the extent of the universe that we can currently observe. However, it is crucial to understand that beyond this observable universe, there may be more of the universe that we are unable to observe due to the finite speed of light.
As for what lies beyond the observable universe, we don't have direct observational evidence. One possibility is that the universe is significantly larger than what we can observe, and there could be regions similar to our observable universe beyond our cosmic horizon. Another possibility is that the universe is infinite and extends indefinitely in all directions. In either case, we cannot currently observe or provide a definitive description of what lies beyond the observable universe.
It is important to remember that the observable universe is limited by the age of the universe and the finite speed of light, and our understanding of the larger structure of the universe is still a subject of active research and investigation in the field of cosmology.