New research suggests moderate sun exposure offers health benefits, challenging traditional protection guidelines and changing public perception.

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...

The latest Northern Lights forecast means the aurora borealis may be seen in the continental U.S. tonight after space weather ...

The gigantic coronal hole is blasting high-speed solar wind toward Earth, potentially igniting vibrant auroras and minor ...

A vast 500,000 mile-wide coronal hole has opened up in the Sun's atmosphere, which is now shooting high-speed solar wind ...

The gigantic coronal hole is blasting high-speed solar wind toward Earth, potentially igniting vibrant auroras and minor ...

Astronomers have discovered an exoplanet that might have favorable conditions for liquid water. This planet, HD 20794 d, ...

Astronomers have discovered another exoplanet that may have favourable conditions for the existence of liquid water. We are ...

What are the top facts about the ocean? While much is known about the ocean, a large part of it remains unknown. Here are fun facts about it for people of all ages.

National Geographic premiered "SALLY," Cristina Costantini's new documentary about the first U.S. woman in space and her ...

Today I actually walked outdoors without a hat when I stopped for coffee on my way to the newsroom. I didn't have to suit up like an astronaut and put on ice cleats just to walk to my car. When the ...

Gulf of Where? In the same name-swapping order, designed to take effect by mid-February, Trump declared that the Gulf of ...