The concept of "before" the Big Bang can be a bit tricky to grasp because the Big Bang is considered the beginning of the universe, including space and time as we know it. According to our current understanding of physics, time as we experience it began with the Big Bang. Therefore, talking about events "before" the Big Bang in a chronological sense may not be meaningful in the traditional sense.
The Big Bang is the prevailing scientific theory that describes the early development and expansion of the universe from an extremely hot and dense state. It's important to note that our understanding of the very early universe is still an active area of research, and there are various theories and hypotheses being explored to explain what might have happened before or at the moment of the Big Bang.
One hypothesis that attempts to address the question of what came "before" the Big Bang is the concept of a multiverse. In some theories, the universe we observe is just one of many universes in a larger multiverse. These universes may have different physical laws or even different dimensions, and they could potentially have different notions of time. In this context, it is conceivable that events or phenomena in one universe may have an influence on another, giving rise to the idea of observing something "before" the Big Bang.
However, it's important to note that our current scientific understanding of the universe is limited, particularly when it comes to the very early stages. The concept of time and causality may not apply in the same way in those extreme conditions, and the physics involved may be fundamentally different from what we can observe and study in the present universe. As our understanding of physics and cosmology evolves, scientists continue to explore these questions to gain deeper insights into the origins of the universe.