sunspot
AR1654 is a Monster Sunspot. (And It’s Aiming Our Way.)
Active Region 1654 on the Sun's western limb, seen by SDO on Jan. 11 (NASA/SDO/HMI team. Diagram by J. Major.)…
11 years ago
HI-C Returns Most Detailed Images Ever of the Sun’s Corona
NASA's High Resolution Coronal Imager (Hi-C) mission, launched Wednesday, July 11 from White Sands Missile Range in New Mexico, successfully returned…
12 years ago
A Shimmering, Simmering Sunspot
This quick animation made by astrophotographer Alan Friedman shows a 30-minute view of sunspot 1520, a large region of magnetic…
12 years ago
A Rare Type of Solar Storm Spotted by Satellite
[/caption] When a moderate-sized M-class flare erupted from the Sun on May 17, it sent out a barrage of high-energy…
12 years ago
Earth-Facing Sunspot Doubles in Size
[/caption] The latest sunspot region to traverse the face of the Sun has nearly doubled in size as it aims…
12 years ago