During solar storms and other sun-related events, the oval expands southward into the Upper Midwest, bringing the northern lights to skywatchers at lower latitudes. Rarely does it sit directly over us ...

STANDING on a pitch-dark, icy road in bone-chilling arctic cold, a small tinge of green appeared in the sky. Seconds earlier ...

A new study published by an international team of researchers led by Taro Matsuo, an astrophysicist at Nagoya University in Japan, argues that this evolutionary trend made sense 3 billion years when ...