The concept of what lies at the edge of space or beyond our universe is still a topic of speculation and debate among scientists and philosophers. Our current understanding of the universe is based on the Big Bang theory, which suggests that the universe originated from a singularity and has been expanding ever since. However, beyond a certain point, our knowledge becomes limited.
The term "edge of space" usually refers to the boundary between Earth's atmosphere and outer space, known as the Kármán line, which is approximately 100 kilometers (62 miles) above sea level. Beyond this boundary, the distinction between Earth's atmosphere and the vacuum of space becomes more pronounced. However, when you mention "beyond our universe," it suggests going beyond the observable universe, which is a different concept.
The observable universe is the portion of the universe that we can detect and study given the finite speed of light. It is estimated to be about 93 billion light-years in diameter. Anything beyond this observable universe, whether it exists or not, is currently beyond our ability to observe or detect directly. This is because the light from those regions has not had enough time to reach us due to the expansion of the universe.
Speculations about what might exist beyond our universe vary widely. Some theories propose the existence of a multiverse, a collection of multiple universes with potentially different physical laws or properties. These universes could be disconnected from our own or could interact in various ways.
However, it is important to note that these ideas are currently theoretical and speculative, lacking empirical evidence. Detecting or studying what lies beyond our universe is highly challenging, as it requires finding new ways to probe and observe regions that are currently inaccessible.
To gain a better understanding of what lies at the edge of space or beyond our universe, scientists continue to explore various fields such as cosmology, theoretical physics, and astrophysics. Advancements in technology and observational techniques may provide new insights in the future, but for now, much of it remains a realm of scientific inquiry and imagination.