solar
Yet Another X-Class Flare From AR 1748
Last night, as Commander Hadfield and the Expedition 35 crew were returning to Earth in their Soyuz spacecraft, the Sun…
The Sun Doesn’t Cause Earthquakes
If that title seems like an obvious statement to you, it's ok... it seems pretty obvious to me too. But…
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.)…
Catching Sunlight: A TEDx Talk by DIY Solar Photographer Alan Friedman
Video poster frame shows Alan Friedman's 90mm hydrogen alpha telescope setup -- nicknamed "Little Big Man" -- on an Astro-Physics…
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…
The “Deep Blue Sea” of the Sun
Looking like an intricate pen-and-ink illustration, the complex and beautiful structures of the Sun's surface come to life in yet…
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…
How Big Are Sunspots?
[/caption] The short answer? Really big. The long answer? Really, really big. The image above shows sunspot regions in comparison…