During a brief but dramatic chapter in Earth's history about 41,000 years ago, the planet’s magnetic field nearly collapsed.

Phase-space tomography has newly discovered cases where rightward and leftward waves occur simultaneously. Those waves accelerate more particles, which is thought to lead to more efficient plasma ...

The James Webb Space Telescope's observations of Sagittarius C (Sgr C ... A fresh analysis of those observations has now ...

Black holes are fundamental to the structure of galaxies and critical in our understanding of gravity, space, and time. A ...

Primordial black holes are the earliest black holes thought to exist, and they vanished almost as fast as they came into ...