Residents in parts of New Jersey and Philadelphia shared photos of yellow sky, as tornado and thunderstorm warnings were in effect. What does it mean?

Earth's summer and winter solstices NASA Because of its position in the sky, June's full moon may live up to its nickname by appearing more colorful.

Welcome to WTOP’s monthly feature: “What’s up in the sky?” Each month it will feature the best the sky has to offer stargazers regarding the moon, planets and stars.

The massive annual spring migration of America's birds – millions of them – is underway. Here's how to follow along at home.

It's been a long, hard winter in much of the U.S., a bummer if you hate scraping ice off your car windows in the morning. But for people who love snow, like me, winter is a playground. I set off ...

Astronomer Dean Regas gives us the lowdown on the best things to look out for this winter, from a “planet parade” to the ATLAS comet.

Along with the solstice, the many reasons to gaze into the winter sky Bright stars, bright Mars and a vanishing Moon will highlight the winter sky over Washington.

From their very earliest pronouncements, the raison d’être for Team Sky was clear: winning the Tour de France with a British rider. Behind the scenes, the super-team had the much-trumpeted ...

One PS editor traveled to Iceland's Sky Lagoon for a taste of the Nordic wellness experience. Here, she details what to know and bring when visiting.

In winter, yellow-rumped warblers look mostly gray-brown, with subtle yellow on their rump and flanks. (Photo by Mick Thompson) ...

How to find Procyon: Along with Sirius and Betelgeuse, Procyon lies in the “winter triangle.” The bright star sits higher than Sirius in the sky. Betelgeuse ...