“Looking at the stars is a glimpse of history. Some of the things we see are millions of light-years away. Everything in the universe has a past but stars don't try to hide it. They just keep shinning, for everyone to see.”

“Staring at the stars was like staring backward in time, since some stars are so far away that their light takes millions of years just to reach us. That we see stars not as they look now, but as they were when dinosaurs roamed the earth. The whole concept just struck me as…amazing somehow.”

“When we look up at night and view the stars, everything we see is shinning because of distant nuclear fusion.”

“When we gaze at a star in the Milky Way which is 50,000 light-years away from our sun, we are looking back 50,000 years in time.""The idea is much too big for my little head.""The only way we can look out into space, then, is to look back in time. We can never know what the universe is like now. We only know what it was like then. When we look up at a star that is thousands of light-years away, we are really traveling thousands of years back in the history of space.”

“Of course there are worlds. Millions of them! Every star you see has worlds, and most of those you don't see.”

“The immense distances to the stars and the galaxies mean that we see everything in space in the past, some as they were before the Earth came to be. Telescopes are time machines.”