{
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    "results": [
        {
            "id": 11325,
            "url": "https://svs.gsfc.nasa.gov/11325/",
            "result_type": "Produced Video",
            "release_date": "2013-09-03T00:00:00-04:00",
            "title": "The Aftermath",
            "description": "On February 15, 2013, a 59-foot-wide space rock weighing 24,000 pounds screamed into Earth's atmosphere and exploded over Chelyabinsk, Russia, in what became the largest known meteor explosion since the 1908 Tunguska event. Combining observations from the NASA-NOAA Suomi NPP satellite with atmospheric models, NASA scientists traced the trail of dust left behind by the meteor. The researchers found that a belt of dust traveling tens of miles above the surface encircled the Northern Hemisphere just four days after the explosion. The dust initially moved east along the stratospheric jet stream at a velocity of 190 mph. Over time, larger and heavier particles began to lose speed and altitude, while smaller and lighter particles stayed aloft. By May 2013, a thin but detectable dust plume persisted in the atmosphere. Watch the video to learn more. || ",
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        {
            "id": 11336,
            "url": "https://svs.gsfc.nasa.gov/11336/",
            "result_type": "Produced Video",
            "release_date": "2013-08-14T13:30:00-04:00",
            "title": "The Aftermath of the Chelyabinsk Meteor as seen by NPP",
            "description": "The NPP satellite is a prototype of the next generation polar orbiting JPSS series of satellites. NPP provides scientists and weather forecasters with critical continuity of data allowing them to study long-term climate changes and provide improved weather forecasts. The highly accurate five instruments on board NPP have already proven to deliver an exceptional quality of data thus continuing the legacy of satellites like Terra and Aqua.Shortly after local sunrise on February 15th of 2013, a meteor as big as a building reached Earth’s atmosphere and produced a massive explosion above Chelyabinsk, a densely populated Russian metropolis. The highly sensitive OMPS instrument on board NPP observed the plume from the explosion 1,100km eastward. Scientists used the data from this first observation and ran two NASA models to project the path of the plume. The results show that the plume’s higher layer would move ahead of the lower layer due to the difference in wind velocity at higher and lower altitudes. The models also showed that the plume would circumnavigate the entire globe and return to Chelyabinsk by February 19th, 2013. As more OMPS observations came in, it was clear that they coincided with the projected path perfectly. The results from this study proved the accuracy of the models as well as the unprecedented sensitivity of the OMPS instrument. The OMPS instrument was able to detect remains of the plume months after the initial explosion, which helped scientists track and study the plume for a long period of time. Since the Earth is constantly impacted by meteoric debris, an instrument like OMPS gives the scientists hope that in its 5-year design lifetime, they will better understand the effect of meteors and particles on the stratosphere, as well as the chemistry of our stratosphere and atmospheric ozone layer. || ",
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        }
    ]
}