For the stars, the whole village changed its streetlights

The village of Qingshui, folded into a mountain valley, made a decision its neighbors laughed at for years: it replaced every streetlight with a dim, warm, low-output lamp the locals call a bean light.

It started two years ago. Lao Kang, an amateur astronomer, came to the village to photograph stars and complained over dinner: "You've got the altitude and the dry air. This should be a prime observing site. But your streetlights are so bright they've washed half the sky white." A young official in the village took the remark seriously and went looking. Light pollution, he learned, is erasing the night sky worldwide; in cities, many children go their whole lives without seeing the Milky Way. Qingshui sits deep in the mountains. Control the lighting, and the galaxy is a tourism asset you get for free.

They did it. Every lamp was swapped for a warm, narrow-beam fixture with a hood, so the light falls on the road and not on the sky. After nine at night, everything off the main road dims by half. New buildings must use anti-glare film on their windows, and no sign may use cold blue-white light. Half the money came from the village collective and half from donations. One retired Party member gave the money he had set aside for his grandson's hundred-day banquet. "The banquet can happen any year," he said. "The galaxy can't wait."

On the first clear night after the change, the whole village was asked to come to the threshing floor. The lamps went off, and everyone said oh at once. The Milky Way ran overhead like a river full of broken glass. An eighty-year-old man said he had not seen that sky in decades, not since he was a boy. The children pointed at a moving point of light and asked if it was a UFO. Lao Kang laughed and said it was a satellite. "You can see it without a telescope. That tells you how clean your sky is."

Cities push the night brighter and brighter with light. Qingshui took a step the other way and gave the night back to the night. The stars returned faster than anyone expected.

The star economy arrived. Lao Kang made introductions, and observing groups began to come. The village opened dark-sky guesthouses, and the requests from guests were oddly uniform: dim room lighting, curtains that block light, and a skylight if possible. Villagers learned the vocabulary — light pollution, dark sky reserve, observing season. The primary school added an astronomy class, and the children learned the constellations faster than they learned the road signs. Last year the village was formally admitted to the international list of dark sky places. The plaque is small and hangs by the village office door.

What the village is proudest of is the children's essays. One girl wrote: "Our village used to be poor and couldn't afford many lamps. Now we still don't have many lamps, but we have the whole galaxy." The essay won a prize. The judge's comment: "The brightest piece of writing we received this year."

The neighboring villages have stopped laughing and come to ask how it was done. Qingshui's answer is written into its new village rules: you are welcome to go dark with us. "The stars don't belong to our village. They belong to everyone. If you want to see them, come."

The guesthouses have grown rules of their own. The owners agreed among themselves to switch off the yard lights at ten and use small path lights instead, to skip bonfires during observing season, and to make the skylight standard, so a guest can lie in bed and count stars. One guest wrote in the book: "Three nights here, three constellation stories for my daughter. She says it's the darkest and the brightest place she has ever stayed." Lao Kang lives in the village most of the year now. He has a new title, outside astronomy tutor at the village school, and teaches one class a week. He has photographed more night skies than he can count, he says, but the one that means most to him is a group photo of the children on the threshing floor, heads tilted back.