system: 
User: If the universe had an edge, what would it look like ?
ChatGPT: 

It's important to note that current scientific understanding suggests that the universe does not have an edge. However, for the purposes of your question, we can imagine what it might look like if it did.

If the universe had an edge, it would likely be a boundary beyond which there is nothing. Beyond the edge, there would be no matter, energy, or space-time as we know it. The edge itself might be a sharp boundary, or it might be a gradual transition from our universe to whatever lies beyond.

If we were able to observe the edge of the universe, we might see a boundary that looks like a line or a wall separating our universe from the void beyond. Alternatively, the edge might appear as a fuzzy or indistinct region, with our universe gradually transitioning into a different kind of space or time beyond.

It's worth noting that the concept of an edge to the universe is purely speculative at this point. The current understanding of the universe suggests that it is infinite in extent, without any boundary or edge. However, this is an active area of research in cosmology, and our understanding may evolve as new observations and theories emerge.
User: What would happen if we hit it ?
ChatGPT: If the universe had an edge, and we were somehow able to travel to that edge and attempt to "hit" it, it's difficult to predict exactly what would happen. 

One possibility is that we would simply encounter the edge of our universe and be unable to travel any further. Depending on the nature of the edge, we might experience a sudden change in the properties of space-time, such as a shift in the laws of physics or a distortion of the fabric of space itself. Alternatively, we might simply find that the edge appears as a boundary that we are unable to cross.

Another possibility is that there might be some kind of interaction between our universe and whatever lies beyond the edge. This could lead to unpredictable and potentially dangerous consequences, such as the release of massive amounts of energy or the creation of new particles that could wreak havoc on our universe.

It's important to note, however, that the concept of an edge to the universe is currently purely speculative and not supported by current scientific understanding. Therefore, any speculation about what might happen if we were to encounter such an edge must be taken with a grain of salt.