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            "description": "See [NASA.gov](http://www.nasa.gov/mission_pages/sunearth/missions/atrex-nightlight.html)",
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            "id": 10922,
            "url": "https://svs.gsfc.nasa.gov/10922/",
            "page_type": "Produced Video",
            "title": "NASA Jet Stream Study Lights up Night Sky",
            "description": "High in the sky, 60 to 65 miles above Earth's surface, winds rush through a little understood region of Earth's atmosphere at speeds of 200 to 300 miles per hour. Lower than a typical satellite's orbit, higher than where most planes fly, this upper atmosphere jet stream makes a perfect target for a particular kind of scientific experiment: the sounding rocket. Some 35 to 40 feet long, sounding rockets shoot up into the sky for short journeys of eight to ten minutes, allowing scientists to probe difficult-to-reach layers of the atmosphere.In March, NASA will launch five such rockets in approximately five minutes to study these high-altitude winds and their intimate connection to the complicated electrical current patterns that surround Earth. First noticed in the 1960s, the winds in this jet stream shouldn't be confused with the lower jet stream located around 30,000 feet, through which passenger jets fly and which is reported in weather forecasts. This rocket experiment is designed to gain a better understanding of the high-altitude winds and help scientists better model the electromagnetic regions of space that can damage man-made satellites and disrupt communications systems. The experiment will also help explain how the effects of atmospheric disturbances in one part of the globe can be transported to other parts of the globe in a mere day or two.The five sounding rockets, known as the Anomalous Transport Rocket Experiment (ATREX), will launch from NASA's Wallops Flight Facility in Virginia releasing a chemical tracer into the air. The chemical — a substance called trimethyl aluminum — forms milky, white clouds that allow those on the ground to \"see\" the winds in space and track them with cameras. In addition, two of the rockets will have instrumented payloads to measure pressure and temperature in the atmosphere. || ",
            "release_date": "2012-03-07T13:00:00-05:00",
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                "alt_text": "Short narrated video about ATREX.For complete transcript, click here.",
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