Astronomers have discovered a pulsar at the core of the Milky Way. It is close to the supermassive black hole, Sagittarius A*.

At just 500 kilometers across, Saturn's sixth-largest moon would fit comfortably inside the United Kingdom, with room to spare.

It's not hard to get sucked into the mind-bending world of "Futurama," and these 12 episodes are the ones we just can't stop ...

Jackson led a lifetime of crusades in the United States and abroad, advocating for the poor and underrepresented ...