Public Solar Viewing Saturday & Sunday April 6th & 7th:
Sat 11 - 3PM: Cupertino's Earth Day @ Cupertino Civic CenterSun 2 - 4PM: SJAA's H+Alpha Day @ Houge Park
POLAR FILAMENT ERUPTION:
Not every eruption requires a sunspot. On April
1st (no fooling) a magnetic filament snaking some 800,000 km
around the sun's north pole rose up and erupted,
hurling part of itself into space. NASA's Solar
Dynamics Observatory (SDO) recorded the event; 7 O'Clock on the solar dial:
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