For generations, the pursuit of knowledge has transformed the unknown into the understood, turning questions into discoveries and discoveries into new frontiers. From the early days of Apollo to Voyager's journey into interstellar space, Hubble's breathtaking view of the cosmos, and Webb's search for the earliest chapters of the universe, each discovery has built upon those that came before it. As America marks 250 years of innovation and progress, we're reflecting on another journey that spans generations: humanity's ongoing quest to understand the universe and our place within it. Because every discovery brings the horizon closer. Learn more: https://science.nasa.gov