Black holes like the one shown in this illustration can grow astonishingly massive by feeding on immense amounts of matter. But just how big can they get? In the early 1960s astronomers discovered a ...

Imagine a creature so tough that it can survive boiling heat, freezing cold, crushing pressure, and even the vacuum of outer space. No, this isn’t a sci-fi alien — it’s a real-life animal called the ...

In my work as a veterinary pharmacologist, I never know exactly what I'm going to get when I open my email. It could be a ...