Why are Black Sabbath coming back? Who else is on the bill? Can I still get tickets? We answer all your questions about this ...

The giant-impact hypothesis posits that billions of years ago a Mars-sized body named Theia collided with the early Earth.

Judge Declines to Block Musk From Accessing Agency Records or Ordering Firings Musk team’s next target is probationary Pentagon employees. Patel clears a procedural hurdle in the Senate, putting ...