On July 2, 2019, a complete photo voltaic eclipse will cross over elements of Argentina and Chile.
Photo voltaic eclipses occur when the Moon passes instantly between the Solar and Earth, casting its shadow onto Earth’s floor. As a result of the Moon’s orbit isn’t completely according to the Solar and Earth, its shadow normally passes above or under Earth. However when it lines up just right, we get a photo voltaic eclipse!
Folks within the interior a part of the Moon’s shadow — the umbra — have the prospect to witness a complete photo voltaic eclipse, whereas these within the outer a part of the shadow — the penumbra — expertise a partial photo voltaic eclipse.
The path of the total solar eclipse stretches throughout elements of Chile and Argentina. Folks exterior this path may even see a partial eclipse or no eclipse in any respect.
Throughout a complete photo voltaic eclipse, the Moon blocks out the Solar’s brilliant face, revealing its comparatively faint outer environment, the corona. The corona is a dynamic area that’s thought to carry the solutions to questions concerning the basic physics of the Solar — like why the corona is so much hotter than the Solar’s floor and the way the Solar’s fixed outflow of fabric, the photo voltaic wind, is accelerated to such high speeds.
Picture Credit score: Miloslav Druckmüller, Peter Aniol, Shadia Habbal
Our Parker Solar Probe and the upcoming Solar Orbiter mission from the European Area Company are exploring these questions by flying via the corona itself and taking unprecedented measurements of the situations there. Plus, our newly-chosen PUNCH mission will create tiny, synthetic eclipses in entrance of its cameras — utilizing an instrument known as a coronagraph — to review constructions within the Solar’s corona and look at the way it generates the photo voltaic wind.
Watching the eclipse
It’s by no means secure to look instantly on the uneclipsed or partially eclipsed Solar – so that you’ll want particular solar viewing glasses or an oblique viewing methodology, like pinhole projection, to observe the eclipse.
For folks within the path of totality, there will probably be a couple of transient moments when it’s secure to look instantly on the eclipse. Solely as soon as the Moon has completely covered the Sun and there’s no daylight shining is it secure to take a look at the eclipse. Be sure you put your eclipse glasses again on or return to oblique viewing earlier than the primary flash of daylight seems across the Moon’s edge.
Irrespective of the place you might be, you may watch the eclipse on-line! The Exploratorium will probably be streaming live views of the eclipse with commentary in each English and Spanish beginning at 4 p.m. EDT / 1 p.m. PDT on July 2. Watch with us at nasa.gov/live!
Para más información e actualizaciones en español acerca del eclipse, sigue a @NASA_es en Twitter o vea esta hoja de hechos.
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