Carl Sagan, known for making complex science understandable, used the idea that “You’re a time traveler without knowing it” to show how we experience time in everyday life. Here’s the simple breakdown: - Time Dilation: Einstein’s relativity theory says time can change based on speed or gravity. If you’re on a fast spaceship, time slows down for you compared to Earth, letting you age slower - a kind of time travel into the future. - Light Travel: When looking at stars, you’re seeing light that ha