sun
Incredible View of an Active Region on the Sun
Wow! What a view of Active Region 1542 on the Sun! César Cantú from the Chilidog Observatory in Monterrey, Mexico…
Huge Solar Filament Stretches Across the Sun
Caption: High resolution full disc hydrogen alpha composite of the Sun on August 5, 2012, comprising of 6 images for…
Guest Post: Our Explosive Sun
Editor's note: Pål Brekke is a Norwegian solar physicist with a doctorate from the University of Oslo in astrophysics and…
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…
Prelude to an X-Class Solar Flare
Caption: Shimmering coronal loops from Active Region 1515 on the limb of the Sun before it rotates out of view…
Incoming! CME On Its Way Toward Earth
As you read this, a huge cloud of charged solar particles is speeding toward our planet, a coronal mass ejection…
Sunspot 1520 Fires a Flare
Remember that cool animation I posted earlier of AR1520 and how I said there's no guarantee it wouldn't unleash an…
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…
Astrophotos: Monster Sunspot Evolution
Caption: A 5-day sequence of sunspot group AR1520. Credit: Shahrin Ahmad, Kuala Lumpur, Malaysia. Click to see a larger version.…
Things on the Sun: Zipper, Airplane and Spots
Caption: ISS Solar Transit. Credit: Fred Locklear. A couple of awesome pictures of the Sun today from amateur astrophotographers: Above…