T ucked into the southwest corner of the United States, Arizona offers something for every type of traveler. Some standout highlights include the Grand Canyon, the Wild West town ...

Explore the wonders of red sprites captured over a thunderstorm in Tibet. Understand their significance in atmospheric science.

"Light pollution from projects like INNA doesn't just hinder research, it steals our shared view of the universe." ...

Mount Etna put on a show, with new strombolian bursts lighting up the Southeast Crater, Italy’s National Institute of ...

The Canadian-built Atacama Cosmology Telescope in the high Chilean desert mountains, which has just given up its final batch ...

Stargazers on nearly one half of the world witnessed a total lunar eclipse overnight, as a rare cosmic lineup caused the moon ...

Here’s why and how the moon can look yellow, orange or red without an eclipse and when Friday's total lunar eclipse blood ...

Earth’s shadow will block most of the light that illuminates the lunar surface, creating what is known as a blood moon.

March's full moon, the Worm Moon, is extra special this year. But Californians may face cloudy skies that could affect the striking view.

The only total lunar eclipse visible in the U.S. this year is set for the night of March 13. Here's how to see it in California.

For centuries, the saying "Red sky at night, sailor’s delight. Red sky in the morning, sailors take warning" has been used to predict the weather – but is there any truth to it? According to ...