Senior Space Science Expert Badge
For most of human history, the planets and stars have only been tiny points of light, floating in a dark sky many millions—or even trillions—of miles away. People began by organizing the sky into constellations, cataloging the stars by brightness, and, then the invention of the telescope harnessed the power of light and expanded our view! Now, it’s your turn to explore light and discover what it teaches us about the Universe!
