For decades, chemistry students have learned a simple truth: polar and nonpolar substances don’t mix. Water and oil stay ...

The Milky Way contains a modest amount of alien civilizations, a new paper proposes — and there's a reason we aren't seeing them.

I/ATLAS, a mysterious interstellar object racing toward the Sun, is baffling scientists with its speed and origin. Some ...

Enterprise" episodes, now it's time to revisit the show's less well-received moments. Here are the 15 worst episodes of "Star ...