In 1964 (Solar Cycle 20; SC 20), Patrick McIntosh began creating hand-drawn synoptic maps of solar magnetic features, based on H-alpha images.

The December, 2011 issue of Solar Physics was a Topical Issue on the Sun-Earth Connection near Solar Minimum.

HAO scientist's Mausumi Dikpati, Peter Gilman, Giuliana de Toma, and UCLA professor Roger Ulrich find that the latitude at which plasma sinking occurs is very important.

Mark Miesch and colleagues Ben Brown (Univeristy of Wisconsin-Madison), Nick Nelson and Juri Toomre (University of Colorado-Boulder), and Allan Sacha Brun (National Center for Scientific Research, France) our making progress studying and connecting the solar dynamo and magnetic flux emergence.

Recent work on historical recurrent geomagnetic activity and the peculiarity of the recent solar-cycle minimum, was chosen by the editors of AGU journals for special highlight.

HAO graduate fellow Maria Weber received an AGU Outstanding Student Paper Award for her talk titled, "Comparing simulations of rising flux tubes through the solar convection zone with observations of active region properties: Constraining the dynamo field strength".

Analyses of solar coronal prominence cavities by an international group of scientists including HAO's Sarah Gibson, Christian Bethge, Giuliana de Toma, Yuhong Fan, HAO visitor Urszula Bak Steslicka and University of Colorado graduate student Don Schmit, has been profiled in a

Approximating a model’s “true” state by applying Kalman filtering to solar cycles, a technique first developed in the 1950s and 1960s to help Apollo 11 settle safely on the Moon.