What can we learn from eclipses?

A total solar eclipse will sweep across northern Spain on August 12 in one of Europe's most anticipated astronomical events of the decade. From the Sun's corona to animal behaviour and human emotions, these rare celestial events continue to provide scientists with valuable insights more than two millennia after they were first observed. Head of Space Science at the Centre National d'Études Spatiales, Olivier Joie-La Marle, shares further insights.