can humans found the border of the universe

The concept of the "border" of the universe is a complex and still largely theoretical topic in cosmology and astrophysics. Here's why finding such a border is challenging:

1. Infinity: According to current scientific understanding, the universe is either infinite or so vast that it's effectively infinite for any practical purposes. If it is indeed infinite, there is no boundary to find.

2. Observation Limitations: Even if the universe has a boundary, it's incredibly difficult to observe or measure. The observable universe is limited by the distance light can travel since the universe itself is about 13.8 billion years old. Beyond this, we can't see because the light from more distant regions hasn't had time to reach us yet.

3. Expansion: The universe is also expanding, which means even if there were a "border," it would be moving away from us as the universe grows.

4. Theoretical Models: There are various models and theories regarding the shape and structure of the universe. Some propose a flat, infinite universe, while others suggest a more complex, possibly finite but unbounded topology, like the surface of a sphere that has no edge but is still finite.

5. Technology Constraints: Current technology limits our ability to explore and observe the universe beyond certain thresholds. Future advancements might allow us to probe deeper into the cosmos, but even then, there's no guarantee we could ever reach or detect a boundary if one exists.

6. Cosmological Horizon: The cosmic horizon, or the limit of what we can observe, is defined by the speed of light and the age of the universe. This horizon expands over time but is not necessarily indicative of a physical boundary to the universe itself.

7. Multiverse Theory: Some theories suggest that our universe is just one of many in a multiverse. In such scenarios, the idea of a border to the universe becomes even more abstract, potentially involving dimensions or realities beyond our comprehension.

In summary, while the idea of a universe with a border is intriguing, current scientific understanding and practical limitations make it extremely challenging, if not impossible, to locate or define such a border. Our knowledge continues to evolve with ongoing research and technological advancements, which may provide new insights into the nature and extent of the universe.