Coronal Loops

Seen in extreme ultraviolet wavelengths, bright coronal loops erupt from the edges of a sunspot in this image, a detail of a larger image captured by the SDO spacecraft earlier today. (Click to see the full-sized version.) Coronal loops are plasma-filled “tubes” that arc upwards from the Sun’s surface and reconnect at both ends. They…

Ultra Magnetism

Revealed in extreme ultraviolet light, our sun’s looping magnetic field lines are visible (watch in HD!) in this video from NASA’s Solar Dynamics Observatory (SDO) satellite. The action spans a two-day period from June 6 – 7, 2010, and features two particularly magnetically-active regions on the sun’s surface. Superheated solar material is caught up in…

Seeing Spots

A gorgeous photo of our Sun by Alan Friedman, taken from his location in Buffalo, NY and uploaded to his site on February 7, shows a huge string of sunspots and an energetic region of prominences, as well as the granules and spicules that create the Sun’s surface texture. Sunspot 1045, the string seen here,…

The Prodigal Sunspot

Researchers at the National Center for Atmospheric Research and Germany’s Max Planck Institute for Solar System Research have released this stunning image, a high-resolution computer model of a sunspot, created over a period of several weeks by a supercomputer performing at a rate of 76 trillion calculations per second. This is, to date, the most…