Observations of the supermassive black hole at the heart of the Milky Way, Sagittarius A*, collected by the James Webb Space Telescope, have allowed scientists to better understand how this cosmic titan fires off flares.

Why the two countries are connected — and what could happen next.

Scientists may have "heard" the first tantalizing evidence of primordial black holes formed directly from overly dense pockets of matter just after the Big Bang.