Eclipse 2019

  • Released Wednesday, July 3rd, 2019
  • Updated Wednesday, May 3rd, 2023 at 1:45PM

Composite photo of the 2019 total solar eclipse, taken from Chile. Credit: Williams College/NSF Atmospheric and Geospace Sciences Division/Jay Pasachoff/David Sliski/Alan Sliski/Christian Lockwood/John Inoue/Erin Meadors/Aris Voulgaris/Kevin Reardon

Composite photo of the 2019 total solar eclipse, taken from Chile. Credit: Williams College/NSF Atmospheric and Geospace Sciences Division/Jay Pasachoff/David Sliski/Alan Sliski/Christian Lockwood/John Inoue/Erin Meadors/Aris Voulgaris/Kevin Reardon

During a total solar eclipse, the Moon blocks out the Sun's bright face, revealing the comparatively faint outer atmosphere, the corona. The corona is a dynamic region that is thought to hold the answers to questions about the fundamental physics of the Sun — like why the corona is so much hotter than the Sun's surface and how the Sun's constant outflow of material, the solar wind, is accelerated to such high speeds. NASA's Parker Solar Probe and ESA's upcoming Solar Orbiter mission are also exploring these questions by flying through the corona itself and taking unprecedented measurements of the conditions there.

Durante un eclipse solar total, la Luna tapa la brillante faz del Sol, revelando la relativamente débil atmósfera exterior del astro, la corona. La corona es una región dinámica que se cree que contiene las respuestas a preguntas sobre la física fundamental del Sol, como por qué la corona es mucho más caliente que la superficie del Sol y cómo la constante salida de material del sol, el llamado viento solar, puede acelerarse a altísimas velocidades. La Sonda Solar Parker de la NASA y la próxima misión de la ESA, Orbitador Solar, también están explorando estas preguntas volando a través de la corona y tomando mediciones sin precedentes de las condiciones allí presentes.

Totality image taken in La Serena.  Credit: Ian Kezsbom, Williams College Expedition

Totality image taken in La Serena. Credit: Ian Kezsbom, Williams College Expedition

Diamond-ring effect image taken in La Serena. Credit: Ian Kezsbom, Williams College Expedition

Diamond-ring effect image taken in La Serena. Credit: Ian Kezsbom, Williams College Expedition

View from ‘Valle Encantado’ close to Mogna city, to 150 km from San Juan city, Argentina. Credit: NASA/Teresa Nieves-Chinchilla

View from ‘Valle Encantado’ close to Mogna city, to 150 km from San Juan city, Argentina. Credit: NASA/Teresa Nieves-Chinchilla

View from ‘Valle Encantado’ close to Mogna city, to 150 km from San Juan city, Argentina. Credit: NASA/Yari Collado-Vega

View from ‘Valle Encantado’ close to Mogna city, to 150 km from San Juan city, Argentina. Credit: NASA/Yari Collado-Vega



Credits

Please give credit for this item to:
NASA's Goddard Space Flight Center