Earth’s magnetic shield is shifting in dramatic ways. New data from ESA’s Swarm satellites show that the South Atlantic Anomaly — a vast weak spot in Earth’s magnetic field — has grown by nearly half ...

Superstorm Gannon, one of the most powerful geomagnetic storms recorded in recent years, wreaked havoc on Earth’s plasmasphere, shrinking it to a fraction of its normal size. This rare event provided ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Here’s what you’ll learn when you read this story: It used to be thought that there were more volatiles ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Here’s what you’ll learn when you read this story: When samples of lunar dust touched down with returning ...