So what happens to it when the black hole disappears? This "black hole information paradox" has bedeviled researchers for decades, and they have developed numerous potential solutions. One is ...

The black hole information paradox has puzzled physicists for decades. New research shows how quantum connections in spacetime itself may resolve the paradox, and in the process leave behind a ...

Ancient quasars seen by the James Webb Space Telescope technically shouldn’t exist, but one rare type of dark matter could ...

The grandfather paradox is just one of the thorny logical problems that arise with the concept of time travel. But one physicist says he has resolved them.

The year’s biggest computer science stories included a new understanding of large language models, and a breakthrough in being able to compute complex quantum systems. We look back at three of the ...