Time in the context of the cosmos is not merely a measure of change but a profound mystery permeating all aspects of existence. It is both present and elusive, like the light of a distant star we see but can no longer touch at its source. The cosmos poses a fundamental question: what is time? Is it the stream in which we exist or an illusion crafted by our perception? The grandeur of the Universe reveals the extraordinary malleability of time. Gravity can slow its flow, while velocity can stretch it to infinity. At the event horizon of a black hole, time can nearly halt, transforming a moment into an eternity. This teaches us that time is not a universal truth but a phenomenon dependent on conditions and perspective.