In August of 1835 a curious report made its way to the pages of a New York newspaper. A series of six articles entitled “Great Astronomical Discoveries Lately Made by Sir John Hershel… At the Cape of Good Hope [From Supplement to the Edinburgh Journal of Science]” were published in The Sun. Today, this event is known as the...

The Solar Wall is featured in Tools: Extending Our Reach, on view from 12.12.2014 to 5.25.2015. Video display of the Sun’s surface from the Atmospheric Imaging Assembly aboard NASA’s Solar Dynamics Observatory (SDO); Satellite launch date: February 11, 2010. Courtesy of Harvard-Smithsonian Center for Astrophysics.