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            "description": "NASA utilizes satellite instruments and models to monitor sources of air pollutants and their movement through the atmosphere. This visualization shows concentrations of air pollutants, such as Particulate Matter (PM2.5, fine particles smaller than 2.5 micrometers), Ozone (O~3~), Carbon Monoxide (CO), and Nitrogen Oxides (NO~x~) as they are tracked from NASA's Goddard Earth Observing System Composition Forecasting (GEOS-CF) system.",
            "release_date": "2025-05-05T12:30:00-04:00",
            "update_date": "2026-01-28T17:21:23.820283-05:00",
            "main_image": {
                "id": 1154743,
                "url": "https://svs.gsfc.nasa.gov/vis/a000000/a005500/a005533/AirQuality_Sphere_1920x1080_0000.png",
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                "width": 1920,
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    "alternate_versions": [
        {
            "id": 5424,
            "url": "https://svs.gsfc.nasa.gov/5424/",
            "page_type": "Visualization",
            "title": "The Different Sources of Atmospheric Methane",
            "description": "This data visualization shows methane (CH₄) in the Earth’s atmosphere during 2021. The colors represent contributions from different sources: agriculture and waste (fuchsia), industry (blue), wetlands (green), wildfires and cropland fires (yellow), and other natural sources (gray).",
            "release_date": "2025-09-22T07:00:00-04:00",
            "update_date": "2025-09-18T10:55:17.638628-04:00",
            "main_image": {
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                "url": "https://svs.gsfc.nasa.gov/vis/a000000/a005400/a005424/TaggedCH4_Americas_2160x2160.00001_print.jpg",
                "filename": "TaggedCH4_Americas_2160x2160.00001_print.jpg",
                "media_type": "Image",
                "alt_text": "This view highlights Methane (CH4) sources over North and South America during 2021.",
                "width": 1024,
                "height": 1024,
                "pixels": 1048576
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}