XMM-Newton has been surprised by a rare type of galaxy, from which it has detected a higher number of X-rays than thought possible. The observation gives new insight into the powerful processes ...

Earth has absorbed high energy cosmic rays for over a century, yet the origin of the most extreme particles remains a fundamental mystery in astrophysics. Some of these incoming particles carry ...

Cosmic voids may seem like the emptiest places in the universe, stripped of matter, radiation, and even dark matter. But they’re far from nothing. Even in these vast empty regions, the fundamental ...