As an expert in the field of astrophysics, I can tell you that the concept of what lies beyond space is a topic of much debate and speculation. Our current understanding of the universe is based on the Big Bang Theory, which suggests that the universe began as a singularity and has been expanding ever since. However, what lies beyond the observable universe is still a mystery.

There are several hypotheses, including the idea of multiverse, where our universe is just one of many within a larger multiverse. Another concept is the quantum foam, which is a theoretical framework that suggests space-time is not smooth but made up of tiny, frothy, constantly changing bubbles at the quantum level.

It's also important to consider the cosmological principle, which states that the universe is homogeneous and isotropic on a large scale, implying that there is no special location or direction in space. This leads to the philosophical question of whether there is an end to space or if it is infinite.

However, these are all theoretical and not yet proven. Our current technology and understanding limit how much we can observe and comprehend about the universe. As science advances, our knowledge and theories about what lies beyond space may evolve.

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Astronomers think space might be infinite, with "stuff" (energy, galaxies, etc.) distributed pretty much the same as it is in the observable universe. If it is, that has some seriously weird implications for what lies out there. Beyond the Hubble Volume you won't just find more, different planets.read more >>