The lights appear within what is known as an aurora oval, a belt that roughly rings the Earth’s geomagnetic poles, said ...

The aurora borealis, or northern lights, is known for a stunning spectacle of light in the night sky, but this near-Earth manifestation, which is caused by explosive activity on the sun and carried by ...

The European and Japanese robotic explorer swooped as close as 183 miles (295 kilometers) above Mercury's night side before ...