Morning Overview on MSN

Rare solar flare spiked atmospheric radiation to a 20-year high

A rare blast from the sun has just pushed radiation in Earth’s atmosphere to levels not seen in nearly two decades, briefly ...

The Geminids are one of the best meteor showers of the year—and the weirdest. Here’s how to see them

This December's dazzling display comes from a strange asteroid with comet-like behavior—and a tail of debris that astronomers ...