Universe in Light-Years

Everything you see in the night sky belongs to the past. Sunlight takes more than eight minutes to reach Earth. Some starlight has traveled for centuries; the faint glow of distant galaxies may have crossed the universe for billions of years. Now, you can follow the path of that light and begin a journey of your own. Universe in Light-Years takes you from Earth, through the Solar System and the Milky Way, beyond nearby galaxies, and toward the edge of the observable universe. Touch a celestial object to bring it closer. Orbit around it, explore it from every angle, then pull away until the world you know becomes a single point in an endless sea of stars. Encounter burning suns, silent planets, luminous nebulae, rotating galaxies, and black holes from which even light cannot escape. Every approach reveals something new. Every departure changes your sense of distance, time, and scale.…