Since conventional explanations have failed to pony up dark matter, one physicist is looking towards the unconventional. In a series of two papers, physicist Stefano Profumo of the University of ...

Observations show the universe appears flat, yet its true size and global shape beyond the observable horizon may remain ...

Physicists have started to treat a once-fringe idea with surprising seriousness: that our entire observable universe might be the interior of a black hole that formed in some larger cosmos. The notion ...

Did primordial black holes born during the Big Bang swallow the universe's antimatter, allowing matter to dominate the cosmos ...