Witness the ultimate magnet satisfaction with fascinating magnetic games featuring an octahedron inside a cube. Watch as powerful ... Baffling Mysteries About the Universe Time Is Running Out ...

The universe is a crazy place. In fact, it's probably the craziest place you've ever been. It's full of exploding stars and immortal jellyfish and it's been kicking around for almost 14 billion years.

Many of the atoms you're made of, from the calcium in your bones to the iron in your blood, were brewed up in the heart of an exploding star billions of years ago.