The question of the origin of everything is a subject of ongoing scientific and philosophical inquiry. The prevailing scientific explanation for the origin of the observable universe is the Big Bang theory. According to this theory, approximately 13.8 billion years ago, the universe began as a singularity—an infinitely dense and hot point. Then, it rapidly expanded and continues to expand to this day.
However, what happened before or at the moment of the Big Bang is still an area of active research and debate among physicists. The concept of "where everything came from" and the ultimate origin of the universe is a topic that is still being explored and studied.
It's important to note that while the observable universe has a history and an origin, the question of whether the universe as a whole had an ultimate beginning or if it has existed in some form eternally is still an open question. Scientific research and theories like inflation, quantum cosmology, and multiverse proposals aim to shed light on these fundamental questions.
It's worth mentioning that these topics go beyond the current limits of scientific understanding, and our knowledge of the universe's origins continues to evolve as new evidence and theories emerge.