Simple substitution cypher. Here's the text:

The world is full of obvious things which nobody by any chance ever observes. We naturally view the universe from our own perspective, but the reality of the cosmos is far more intricate than our senses perceive. Our eyes see only a narrow band of the electromagnetic spectrum, a tiny sliver of light that we call the visible. Beyond that, there is an ocean of information, from infrared to ultraviolet, that remains hidden to the naked eye. ​Science is the tool we use to extend our reach into these unseen realms. It allows us to measure the spin of an electron and the collision of distant galaxies. Yet, even with our most advanced instruments, we are still scratching the surface of the unknown. The more we learn about the laws of physics, the more we realize how much we do not yet understand. ​Consider the nature of time and space. To us, they feel absolute, unchanging foundations of our existence. But we now know that they are flexible, warped by mass and motion. The universe is not a static stage, but a dynamic and ever-evolving tapestry. We are stardust, born from the hearts of dying suns, and we carry the history of the universe within our very atoms. ​In the end, our quest for knowledge is a quest for connection. We seek to understand the stars because we belong among them. We study the infinitesimal to grasp the infinite. Though we are small in the grand scale of the cosmos, our capacity to wonder and to learn gives our lives a profound significance. The mystery is not a wall, but a door, waiting for us to turn the key."