The night sky looms bright over the facilities of McDonald Observatory after a star party in Fort Davis, Texas, on May 27. (Paul Ratje for NPR) DAVIS MOUNTAINS STATE PARK, Texas — It's a packed night ...

Firefly populations are declining, taking our wondrous summer views with them. Read all about the driving forces behind this ...

The universe is huge. If you want to get a really good look at it, you need to be in the right place, at the right time.

“Blue wavelengths of light are damaging to many forms of life, and glare from unshielded light compromises road safety and infiltrates bedrooms, suppressing melatonin production, undermining sleep ...

Artificial light, while beneficial to humans, has disrupted the natural day-night cycle and created light pollution, negatively affecting wildlife. Humans also suffer from light pollution, ...

Light pollution from human activity can threaten radio astronomy – and people's view of the night sky. Estellez/iStock via Getty Images Outdoor lighting for buildings, roads and advertising can help ...

For most of human history, darkness was a constant. The rhythms of nature, wildlife behavior, and even human sleep evolved under predictable cycles of day and night. In the past century, however, ...

You may have seen reports late last month about a new study showing how too much light at night is affecting birds — the latest sign of a problem that has implications for us, too. The study’s ...

Light pollution is a man-made problem caused by the excessive use of artificial lights, especially at night. These lights can disrupt natural sleep cycles, waste energy, and even mislead migratory ...

DAVIS MOUNTAINS STATE PARK, TEXAS — It’s a packed night at McDonald Observatory, where dozens of people are crowding around high-powered telescopes as a thunderstorm rolls off to the east. Locals and ...