• Public

  • Public
  • Network
  • Groups
  • Featured
  • Popular
  • People

1. Image of the Sun during an artificial solar eclipse. Against a black background, the Sun’s bright body is covered by a black disc, and light green hair-like tendrils extend from the black disc in all directions. Brighter green light peeks from behind the black disc’s edge, slowly fading towards the outer edges of the image. This image, captured in the visible light spectrum, shows the solar corona similarly to how a human eye would see it during an eclipse through a green filter. The hair-like structures were revealed using a specialised image processing algorithm. CREDIT: ESA/Proba-3/ASPIICS/WOW algorithm 2. Image of the Sun taken during an artificial solar eclipse. Against a black background, the Sun’s bright body is covered by a black disc, and blue-green hair-like tendrils extend from the black disc in all directions. Brighter green light peeks from behind the black disc’s edge, slowly fading towards the outer edges of the image. This image shows observations in the coronal green line – a spectral line emitted by iron atoms that lost half of their electrons due to extremely high temperatures. This allows us to see the hottest contents of the corona, at up to 2 million degrees. On the upper left side, a hot loop can be seen extending from the Sun’s surface into the corona, a structure which generally appears following a solar flare. CREDIT: ESA/Proba-3/ASPIICS