NASA's Solar Dynamics Observatory captured massive filament across Sun
NASA has recently observed a giant million miles long filament across the Sun, it has been reported. Filaments are clouds of solar material suspended above the sun by powerful magnetic forces. Though notoriously unstable, filaments can last for days or even weeks.A dark snaking line in the upper right of the images captured by NASA's Solar Dynamics Observatory or SDO on Sept. 30, 2014, shows a filament of solar material hovering above the sun's surface. It captured the images in extreme UV light – different colors represent different wavelengths of light and different temperatures of solar material.