Is the night sky ever really dark? In a word, no. Anyone who's ever walked their dog at night knows that when you step out the door, it can seem awfully dark out there. By and by, our eyes get used to ...

Every day, as sunlight streams into your eyes, trillions of tiny clocks in your cells reset. The human body uses light to correctly time myriad processes, ensuring that liver enzymes are made on ...

When you go outside on a clear, moonless night, you can see not only lots of stars but also the black space between them—literally space, in this case. Given that you can see stars and that the sky is ...

Oregon has been abuzz with dark sky news lately. Over the last few years, we’ve seen announcements of new Dark Sky Parks, Dark Sky Communities and the biggest Dark Sky Sanctuary in the world — all in ...

The technicolor Florida sunset had faded into darkness, and my extended family, assembled from two continents and three countries, gathered on the beach at Longboat Key to look at the stars. We were ...

If you know how OLED displays work, you know about one of their greatest strengths: Individual pixels can be shut off, offering deeper blacks and power savings. Dark modes, now available on most ...