On looking up
Every clear night, photons that left a star before the pyramids were built finish their journey on the back of my eye. To the universe the transaction is unremarkable; to me it is the whole point. Observational astronomy is the oldest way of doing physics, and I think it remains the most honest, because it begins by admitting how small the observer is.
I spend my working hours inside equations — density functionals, band structures, the tidy machinery that lets us predict how a sheet of carbon will behave. It is satisfying work, and it can quietly convince you that the world is a thing you compute. Then you carry a telescope outside, let your eyes adjust for twenty minutes, and find Saturn hanging there with its rings actually tilted, and the conviction rearranges itself. The rings were never a formula. They were always just there, indifferent to whether anyone derived them.
There is a discipline in looking up that I don’t find anywhere else. It asks for patience — the sky rewards the person who waits for their pupils, not the person who wants a result. It asks for humility — every object in the eyepiece is older, larger, and more permanent than the questions I bring to it. And it asks for a kind of attention that has gone out of fashion: sustained, unrewarded by notifications, pointed at something that will not perform for you.
I don’t look up to feel small in a bleak way. I look up because it is the one reliable cure I know for taking myself, and my little corner of the periodic table, too seriously. The stars were doing fine before physics, and they will be doing fine after. That is not a discouraging thought. It is a relief.