NASA's Parker Solar Probe has flown into the Sun's corona. Structures known as coronal streamers and the Milky Way can be seen in the footage it captured. Credit: Space.com | NASA/Johns Hopkins APL/Na ...

Russia and other hostile states have become increasingly brazen in adopting “gray zone” attacks against Europe and the United States, leaving defense officials with a dilemma: How to respond ...

Twins are pretty rare, accounting for just 3% of births in the U.S. these days. But new research shows that for primates 60 million years ago, giving birth to twins was the norm.

As Bulgaria joined Europe's borderless travel zone on January 1st, Greeks have been freely flocking to the neighboring country, where petrol prices are cheaper, to fill up their tanks. Bulgaria, along ...