Late on Oct. 21, 2025, a spectacular coronal mass ejection (CME) erupted from the far side of the sun, an area currently dominated by the powerful and persistent Active Region 4246. The eruption ...

Structural imaging based on magnetic resonance is an integral part of the clinical assessment of patients with suspected Alzheimer dementia. Prospective data on the natural history of change in ...

Visual storytelling is the heart of National Geographic. Our photography contests feature images created by photographers from around the world, sharing visions that inspire, inform, and awe. Explore ...