how far can space go

The concept of "how far can space go" is a bit mind-boggling, as it’s difficult to wrap our heads around the vastness of the universe. The short answer is that we don’t really know for sure, but here are some theories and observations that might help:

1. The observable universe: The farthest objects we can see with our telescopes are about 13.8 billion light-years away. This is the distance light could have traveled since the Big Bang, which is thought to have occurred around 13.8 billion years ago. However, it’s believed that the universe is much larger than what we can observe.
2. The universe’s expansion: The universe is expanding, and this expansion is accelerating. This means that the distance between objects in the universe is increasing over time. It’s possible that there are regions of the universe that are beyond our observable horizon, but we can’t see them because light from those regions hasn’t had time to reach us yet.
3. The multiverse hypothesis: Some theories suggest that our universe is just one of many in an infinite multiverse. If this is the case, then the concept of "how far can space go" becomes even more abstract, as there may be an infinite number of universes beyond our own.
4. The curvature of space-time: According to Einstein’s theory of general relativity, space-time is curved by the presence of matter and energy. This curvature can lead to some interesting effects, such as gravitational lensing and wormholes. However, it’s still unclear how space-time behaves at very large scales, and whether it’s possible for space to "curve back" on itself.
5. The concept of infinity: Some theories, such as eternal inflation, suggest that the universe is infinite in size. However, the concept of infinity is still a topic of debate among mathematicians and physicists, and it’s unclear whether infinity is a meaningful concept in the context of space and time.

In summary, while we have some ideas about the vastness of the universe, we still don’t know for sure how far space can go. The universe is likely to be much larger than what we can observe, and there may be regions beyond our observable horizon that we can’t see. Ultimately, the nature of space and time remains one of the greatest mysteries of modern physics.