The Sun will eventually undergo a process known as stellar evolution, where it will exhaust its nuclear fuel and expand into a red giant. This phase is expected to occur in about 5 billion years. During this phase, the outer layers of the Sun will expand, engulfing the inner planets, including Earth. This event will likely result in the end of life on our planet.
However, it's important to note that the concept of human existence extends beyond the lifespan of our Sun. The long-term survival and continuation of humanity depend on our ability to adapt, explore, and potentially colonize other planets or star systems. This would require significant advancements in technology and space exploration capabilities.
Moreover, the ultimate fate of humanity is uncertain and depends on various factors, including our ability to address global challenges, scientific and technological progress, and our understanding of the universe. While the lifespan of the Sun presents a significant challenge for the long-term survival of humanity, it is not necessarily the definitive end for our species.
Scientists and researchers are actively exploring possibilities such as interstellar travel, terraforming other planets, or even creating self-sustaining habitats in space to ensure the continuation of human civilization. It is a subject of ongoing scientific inquiry and speculation, and our understanding of the possibilities will likely evolve over time.