The question of whether the universe is eternal is a topic of scientific and philosophical debate. the prevailing scientific understanding suggests that the universe had a beginning in an event known as the Big Bang, approximately 13.8 billion years ago. This event marked the beginning of space, time, and matter as we know them.
However, it is important to note that our understanding of the universe is constantly evolving as new discoveries and theories emerge. While the Big Bang theory provides a framework for explaining the origin and evolution of the universe, there are ongoing investigations into the nature of the universe before the Big Bang and the possibility of multiple universes or a cyclical model.
Some physicists and cosmologists propose alternative ideas, such as the concept of a multiverse, where our universe is part of a larger ensemble of universes with different physical laws and properties. Within this framework, the existence of an eternal or cyclic universe could be possible.
Ultimately, the question of the universe's eternity remains unanswered definitively. Scientists continue to explore and refine our understanding of the universe through observations, experiments, and theoretical models in the quest for a more complete understanding of its origins and ultimate fate.