When millions of people turn off their lights for Earth Hour each year, something remarkable happens in the night sky above cities. New research from Hong Kong published in Scientific Reports shows ...

The city of Liberty Hill hit a new milestone after it was designated an International Dark Sky Community. This means the city ...

Nevada City pushes for Dark Sky certification to protect night sky In a world that's growing brighter by the year, one small gold rush town is working to keep its night dark and its skies full of ...

In 2001, Flagstaff became the first Dark Sky city in the world. Kirksville and nearby towns make up a micropolitan area with a population of about 30,000.

A new trail in this southern Arizona city plots the most visitor-friendly astronomy stops—and there are plenty to choose from, including world-class observatories and six Dark Sky parks.