For nearly a decade, some of the most dramatic explosions in the universe have been hiding in plain sight as brief, bright ...

Look up at the sky on a clear night, and you’ll see thousands of stars – about 6,000 or so. But that’s only a tiny fraction of all the stars out there. The rest are too far away for us to see them.

When looking up on a cloudless night, do you notice that stars can sometimes show as different colors? You may even notice yellow, red, orange, and blue stars — not just white. A star’s color can ...