For more than 150 years, the OJ 287 galaxy and its brightness variations five billion light years away has both puzzled and ...

Nature survey shows that disagreement about the meaning of quantum physics remains strong, even 100 years in. And that’s OK.

Lightning has captivated scientists for centuries, but despite extensive research, the precise atmospheric conditions that ...

Key TakeawaysResearchers have built a compact X-ray free-electron laser (XFEL) using laser plasma accelerators to generate ...

Penn State University scientists have demonstrated the complex series of events occurring inside thunderclouds that create ...

Though scientists have long understood how lightning strikes, the precise atmospheric events that trigger it within ...