These images of the Sun’s surface are stunning

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L’équipe qui opère le télescope solaire Daniel-K.-Inouye vient de publier deux nouvelles images magnifiques de notre étoile. © NSO, AURA, NSF

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[EN VIDÉO] When and how will the Sun die? Our star would be in the middle of its life, but what will happen when it disappears? Built on the side of a volcano, on the island of Maui in the Hawaiian archipelago, the Daniel-K.-Inouye Solar Telescope, — the one of the National Science Foundation (United States) that received the name of the solar telescope of advanced technology-. – known for being the most powerful telescope in the world to observe our Sun. And a few days ago, on the occasion of its official inauguration — it has been collecting scientific data for a few months now — the teams in charge of its operation published two new impressive images of our Star. Its quality is even more incredible. that we are not talking about a probe sent “to burn its wings” near the Sun. But a telescope on the ground. With a 4-meter mirror, mounted at an altitude of about 3,000 meters and protected from light pollution and atmospheric turbulence by an ocean environment The solar chromosphere in all its states About the two images published at the inauguration of the Daniel solar telescope -K .-Inouye, we discover the chromosphere of our Star. Understand the lower atmosphere of the Sun. This layer of gas located just above its visible surface. One of the images shows what astronomers call solar granulation. The phenomenon was first identified at the beginning of the 19th century by William Herschel. Convective cells, as known to researchers since the 1930s, are each about 500 to 1,000 kilometers in size. And its useful life is rather short. About ten minutes only. The other image, just as enchanting, shows a kind of trail that is actually nothing more than jets of plasma at a very high temperature. The surface of the Sun as you have never seen it! The Daniel K. Inouye ground-based solar telescope has just acquired its first images of the Sun. They are quite simply the finest and thinnest of the Sun’s surface ever obtained. This unprecedented ability to observe the Sun promises a spectacular leap in the knowledge of the phenomena at the origin of its activity that influence space weather. Article by Rémy Decourt published on 30/01/2020 While the European Space Agency and NASA prepare to launch. the Solar Orbiter probe in a few days and that the American Parker Solar Probe has approached only 19 million kilometers from the Sun, it is a terrestrial solar telescope that is making news. In fact, the Daniel K. Inouye Solar Telescope (DKIST for the Daniel K. Inouye Solar Telescope), scheduled for commissioning this summer, has acquired its first images and they are the most accurate ever recorded of the Sun’s surface . The smallest details that can be perceived are barely 30 kilometers! Which, on the scale of the Sun, a star nearly 1.4 million kilometers in diameter, is microscopic. Convection cells in perpetual motion What we see are the convection cells that make up the surface of the Sun . They measure more or less 1,000 kilometers in diameter and are constantly changing. They warp, appear and disappear as motions occur beneath the Sun’s surface, causing the hottest gas to rise from the star’s interior to the surface. The ground-based solar telescope DKIST is revealing unprecedented details of our Sun. © NSO, YouTube Built on Mount Haleakala on the island of Maui in Hawaii, DKIST is the world’s largest solar telescope capable of acquiring ultra-detailed images of the Sun’s surface, with twice the resolution than the other lot. observatories in service. Until today, solar telescopes had mirrors with a diameter of up to 1.50 meters. This off-axis telescope is equipped with a 4.2 meter diameter active primary mirror, with thermal control and adaptive optics. DKIST is also the most complex and technical solar telescope currently in service. This telescope was designed to better understand the role of the Sun, primarily its magnetic field, in spacetime. Interested in what you just read?
#images #Suns #surface #stunning

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