An explosion in space so massive you'll be able to look up and see it in the night sky without a telescope could happen "any day now," a NASA expert said Wednesday. The stellar burst, called a nova, ...

You won't need solar eclipse glasses for this one. An explosion in space so massive you'll be able to look up and see it in the night sky without a telescope could happen "any day now," a NASA expert ...

The stars aren’t fixed and unchanging, unlike what many ancient people thought. Once in a while, a star appears where there wasn’t one before, and then it fades away in a matter of days or weeks. The ...