Many astronomers are growing increasingly concerned that these outdoor lighting from roads, buildings and elsewhere could ...

The northern lights will have a better chance of being seen throughout Canada and Alaska once the sun sets in the state. A ...

This week, skywatchers across the northern United States have a special treat waiting for them. The magical northern lights — ...

A lurch in the Earth’s tectonic plates can wreak havoc at any time. How do scientists measure quakes, and are we doing enough to prepare?

Point Reyes Station began life as a railroad town in the late 19th century, serving as a crucial link between the dairy farms of West Marin and the growing city of San Francisco. The train tracks are ...

Some observatories that used to be dark and remote are now adjacent to bright urban centers. And sending all telescopes into ...

Outdoor lighting for buildings, roads and advertising can help people see in the dark of night, but many astronomers are ...

Tsunami warnings and advisories remained in effect early on Wednesday for Hawaii, California and the rest of the US West Coast, with further waves expected.