mathemakitten

“Astronomy was history, because space was time. And that was the thing she loved most about the universe itself. When you look at the red star Antares in the Southern sky, you are looking over 3300 trillion miles away. But you are also looking more than 550 years into the past. Antares is so far away that its light takes 550 years to reach your eye on Earth. 550 lightyears away. So when you look out at the sky, the farther you can see, the further back you are looking in time. The space between you and the star IS time. And yet, most of the stars have been there for so long, burning so bright, that every human generation could have looked up and seen them. When you gaze up at the sky and you see Antares with its reddish hue in the middle of the constellation Scorpius, you are looking at the same star the Babylonians cataloged as early as 1100 BCE. To look up at the nighttime sky is to become a part of a long line of people throughout human history who looked above at that same set of stars. It is to witness time unfolding.”
― Taylor Jenkins Reid, Atmosphere