Poor air quality caused by ozone and other sources prompted the warnings across six states on Thursday and Friday.

NASA's newest astrophysics space telescope launched in March on a mission to create an all-sky map of the universe. Now ...

In two recent studies, researchers suggest a weakening ocean current system is to blame for a persistent cold spot in the ...

There’s one night of the year where celebrations across the United States light up the map like no other. It’s the Fourth of ...

Looking for a front-row seat to the galaxy? You're in luck, because it's less than 200 miles from Pittsburgh. The big picture: Pennsylvania's own Cherry Springs State Park just landed on Forbes' list ...

Admire our galaxy’s dramatic galactic core—a sparkly bulge of stars and gas—while summer’s short ‘Milky Way season’ lasts ...

The Fourth of July holiday will bring explosive light shows on Friday night, but many folks will see much quieter and calmer ...

While recent research shows the night sky is getting brighter every year across North America, the Big Bend area has fended ...

While recent research shows the night sky is getting brighter every year across North America, the Big Bend area in Texas has ...

Scientists have developed a new method to identify and map plastic waste in urban areas using satellite imagery, offering new ...

This is most useful for Moon observation based on timing, current environment and current light pollution maps -- ideal for Moon watchers or those who like the educational component of viewing and ...

Light streaks caused by passing satellites mar images taken by the world's most expensive telescopes. The problem is set to ...