On July 2, 2019, a complete photo voltaic eclipse will cross over components of Argentina and Chile.
Photo voltaic eclipses occur when the Moon passes immediately between the Solar and Earth, casting its shadow onto Earth’s floor. As a result of the Moon’s orbit isn’t completely in step with the Solar and Earth, its shadow normally passes above or under Earth. However when it strains up good, we get a photo voltaic eclipse!
Individuals within the interior a part of the Moon’s shadow — the umbra — have the possibility 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 entire photo voltaic eclipse stretches throughout components of Chile and Argentina. Individuals outdoors this path might even see a partial eclipse or no eclipse in any respect.
Throughout a complete photo voltaic eclipse, the Moon blocks out the Solar’s shiny 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 a lot hotter than the Solar’s floor and the way the Solar’s fixed outflow of fabric, the photo voltaic wind, is accelerated to such excessive speeds.
Picture Credit score: Miloslav Druckmüller, Peter Aniol, Shadia Habbal
Our Parker Photo voltaic Probe and the upcoming Photo voltaic Orbiter mission from the European House Company are exploring these questions by flying by means of the corona itself and taking unprecedented measurements of the circumstances 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 buildings within the Solar’s corona and study the way it generates the photo voltaic wind.
Watching the eclipse
It’s by no means protected to look immediately on the uneclipsed or partially eclipsed Solar – so that you’ll want particular photo voltaic viewing glasses or an oblique viewing methodology, like pinhole projection, to look at the eclipse.
For individuals within the path of totality, there can be a number of temporary moments when it’s protected to look immediately on the eclipse. Solely as soon as the Moon has fully lined the Solar and there’s no daylight shining is it protected 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.
Regardless of the place you might be, you’ll be able to watch the eclipse on-line! The Exploratorium can be streaming stay 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/stay!
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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