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        {
            "id": 11351,
            "url": "https://svs.gsfc.nasa.gov/11351/",
            "page_type": "Produced Video",
            "title": "Solar Close-ups",
            "description": "Trying to observe minute details on the sun isn’t easy. For one thing, you can't do it from the ground, where Earth's atmosphere blocks X-rays and other frequencies of light needed for making such observations. Instead, solar scientists use telescopes launched into space. Hinode, a sun-observing spacecraft operated by NASA and Japan’s space agency, is equipped with two telescopes and an imaging instrument that are able to capture close-up views of the sun and detect small changes in its magnetic field. The magnetic fields on the sun are part of a writhing, dynamic system that trigger giant explosions called solar flares and coronal mass ejections. These outbursts can send energy and particles toward Earth and interfere with satellites. Hinode is tasked with studying the magnetic activities on the sun's surface and its million-degree atmosphere, the corona. Watch the video to see a collection of solar views recorded by the spacecraft. || ",
            "release_date": "2013-09-24T00:00:00-04:00",
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                "media_type": "Image",
                "alt_text": "A NASA spacecraft captures extraordinary views of the sun.",
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            "page_type": "Produced Video",
            "title": "Discovering the Sun’s Mysteriously Hot Atmosphere",
            "description": "Something mysterious is going on at the Sun. In defiance of all logic, its atmosphere gets much, much hotter the farther it stretches from the Sun’s blazing surface.Temperatures in the corona — the tenuous, outermost layer of the solar atmosphere — spike upwards of 2 million degrees Fahrenheit, while just 1,000 miles below, the underlying surface simmers at a balmy 10,000 F. How the Sun manages this feat remains one of the greatest unanswered questions in astrophysics; scientists call it the coronal heating problem. A new, landmark mission, NASA’s Parker Solar Probe — scheduled to launch no earlier than Aug. 11, 2018 — will fly through the corona itself, seeking clues to its behavior and offering the chance for scientists to solve this mystery.From Earth, as we see it in visible light, the Sun’s appearance — quiet, unchanging — belies the life and drama of our nearest star. Its turbulent surface is rocked by eruptions and intense bursts of radiation, which hurl solar material at incredible speeds to every corner of the solar system. This solar activity can trigger space weather events that have the potential to disrupt radio communications, harm satellites and astronauts, and at their most severe, interfere with power grids.Above the surface, the corona extends for millions of miles and roils with plasma, gases superheated so much that they separate into an electric flow of ions and free electrons. Eventually, it continues outward as the solar wind, a supersonic stream of plasma permeating the entire solar system. And so, it is that humans live well within the extended atmosphere of our Sun. To fully understand the corona and all its secrets is to understand not only the star that powers life on Earth, but also, the very space around us.Read more on NASA.gov. || ",
            "release_date": "2018-07-25T14:00:00-04:00",
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                "url": "https://svs.gsfc.nasa.gov/vis/a010000/a012900/a012903/CHP_Discovery_1080_4.00001_print.jpg",
                "filename": "CHP_Discovery_1080_4.00001_print.jpg",
                "media_type": "Image",
                "alt_text": "Discovering the Sun’s Mysteriously Hot Atmosphere Something mysterious is going on at the Sun. In defiance of all logic, its atmosphere gets much, much hotter the farther it stretches from the Sun’s blazing surface.Temperatures in the corona — the Sun’s outer atmosphere — spike to 3 million degrees Fahrenheit, while just 1,000 miles below, the underlying surface simmers at a balmy 10,000 F. How the Sun manages this feat is a mystery that dates back nearly 150 years, and remains one of the greatest unanswered questions in astrophysics. Scientists call it the coronal heating problem.Watch the video to learn how astronomers first discovered evidence for this mystery during an eclipse in the 1800s, and what scientists today think could explain it.Music credits: 'Developing Over Time' by Ben Niblett [PRS], Jon Cotton [PRS], 'Eternal Circle' by Laurent Dury [SACEM], ‘Starlight Andromeda' by Ben Niblett [PRS], Jon Cotton [PRS]Coronal spectrum image credit: Constantine EmmanouilidiComplete transcript available.Watch this video on the NASA Goddard YouTube channel.",
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        {
            "id": 12604,
            "url": "https://svs.gsfc.nasa.gov/12604/",
            "page_type": "Produced Video",
            "title": "Scientists Uncover Origins of Dynamic Jets on Sun's Surface",
            "description": "At any given moment, as many as 10 million wild jets of solar material burst from the sun’s surface. They erupt as fast as 60 miles per second, and can reach lengths of 6,000 miles before collapsing. These are spicules, and despite their grass-like abundance, scientists didn’t understand how they form. Now, for the first time, a computer simulation — so detailed it took a full year to run — shows how spicules form, helping scientists understand how spicules can break free of the sun’s surface and surge upward so quickly. This work relied upon high-cadence observations from NASA’s Interface Region Imaging Spectrograph, or IRIS, and the Swedish 1-meter Solar Telescope in La Palma. Together, the spacecraft and telescope peer into the lower layers of the sun’s atmosphere, known as the interface region, where spicules form. The results of this NASA-funded study were published in Science on June 22, 2017 — a special time of the year for the IRIS mission, which celebrates its fourth anniversary in space on June 26.Research: On the generation of solar spicules and Alfvénic waves.Journal: Science, June 22, 2017.Link to paper: http://science.sciencemag.org/content/356/6344/1269.full || ",
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                "filename": "LARGE_MP4-2008Apr06GreenFilteredBlueRed-APR422_1280_59.94_large.00001_print.jpg",
                "media_type": "Image",
                "alt_text": "Observations of spicules from NASA/JAXA's Hinode spacecraft.",
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