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The surface of the Sun is covered in features that look like needles or hairs, called "spicules". They were discovered in the 19th century by Angelo Secchi. But we still do not know their origin, their magnetic fields or their possible contribution to the heating of the solar atmosphere...
Walk with Father Secchi to "The QuEST for Spicules", the second episode of our cartoons video series "The QuEST"! (See more at http://www.est-east.eu/est/index.php/outreach?id=745)