A new trail in this southern Arizona city plots the most visitor-friendly astronomy stops—and there are plenty to choose from ...

Paris, France's capital, displays why it is known as the "City of Lights" in this photo taken ... especially from high above Earth at night. This photo of Paris was taken at 9:54 p.m. local ...

This April, the skies put on a dazzling show – watch planets like Jupiter, Venus, and Mars glide across morning and evening ...

For Palo Alto's conservationists, the adoption of a "dark sky" law is a bright idea that is long overdue. But as the City ...

A different kind of nightlife awaits when you road-trip out for some celestial splendor. See the best places for stargazing ...

The moon dims, the meteors fly, and the planets dance—these are the most exciting celestial events happening this month.

A proposed ordinance in Palo Alto looks to lessen the amount of light pollution in the city at night by implementing new regulations on outdoor lighting.

A line of glowing lights streaking silently across the night sky left many residents across the Southeast pausing in awe — and confusion.