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    "title": "Simulated Galaxy Redshift Cubes",
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    "release_date": "2022-03-22T10:00:00-04:00",
    "update_date": "2023-05-03T11:44:17.160042-04:00",
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                "name": "Francis Reddy",
                "employer": "University of Maryland College Park"
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        "Produced by": [
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                "name": "Scott Wiessinger",
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            "description": "This video dissolves between the entire collection of redshift cubes in 55 seconds. A shorter, faster version is available below.<p><p><p>Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)<p><p><p><b>Watch this video on the <a href=\"https://www.youtube.com/watch?v=--coGTBjRuU\" target=\"_blank\" >NASA.gov Video YouTube channel</a>.</b><p><p><p><p><a href=\"/vis/a010000/a014100/a014105/14105_110_RedshiftGalaxyCube_Dissolve_HTML_Transcript.html\">Complete transcript</a> available.</p>",
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            "description": "These visualizations show the number and clustering of simulated galaxies at different cosmic ages, ranging from 4% to 43% of the universe’s current age of 13.8 billion years. Each cube represents a fixed volume of space about 100 million light-years per side. Over the sequence, the expansion of the universe quickly lowers the density of galaxies. Each cube shows a specific cosmological redshift, from 9 to 1, with earlier cubes cast in redder shades.<br><br>The visualizations use data from a realistic simulation developed by Zhongxu Zhai and Yun Wang at <a href=\"https://www.ipac.caltech.edu\">IPAC</a> and Andrew Benson at <a href=\"https://obs.carnegiescience.edu\">Carnegie Observatories</a> to investigate the expected precison and accuracy of the High Latitude Spectroscopic Survey from NASA’s Roman Space Telescope. The full simulation contains 65 million galaxies.",
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            "description": "These six cubes show the simulated distribution of galaxies at redshifts 9, 7, 5, 3, 2, and 1, with the corresponding cosmic ages shown. As the universe expands, the density of galaxies within each cube decreases, from more than half a million at top left to about 80 at lower right. Each cube is about 100 million light-years across. Galaxies assembled along vast strands of gas separated by large voids, a foam-like structure echoed in the present-day universe on large cosmic scales.<p><p>Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)<p><p><b>Watch this video on the <a href=\"https://www.youtube.com/watch?v=nUlhykjtSPQ\" target=\"_blank\" >NASA.gov Video YouTube channel</a>.</b><p><p><p><p><p><a href=\"/vis/a010000/a014100/a014105/14105_110_RedshiftGalaxyCube_6Panel_HTML_Transcript.html\">Complete transcript</a> available.</p>",
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                        "alt_text": "These six cubes show the simulated distribution of galaxies at redshifts 9, 7, 5, 3, 2, and 1, with the corresponding cosmic ages shown. As the universe expands, the density of galaxies within each cube decreases, from more than half a million at top left to about 80 at lower right. Each cube is about 100 million light-years across. Galaxies assembled along vast strands of gas separated by large voids, a foam-like structure echoed in the present-day universe on large cosmic scales.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)Watch this video on the NASA.gov Video YouTube channel.Complete transcript available.",
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                        "alt_text": "These six cubes show the simulated distribution of galaxies at redshifts 9, 7, 5, 3, 2, and 1, with the corresponding cosmic ages shown. As the universe expands, the density of galaxies within each cube decreases, from more than half a million at top left to about 80 at lower right. Each cube is about 100 million light-years across. Galaxies assembled along vast strands of gas separated by large voids, a foam-like structure echoed in the present-day universe on large cosmic scales.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)Watch this video on the NASA.gov Video YouTube channel.Complete transcript available.",
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                        "alt_text": "These six cubes show the simulated distribution of galaxies at redshifts 9, 7, 5, 3, 2, and 1, with the corresponding cosmic ages shown. As the universe expands, the density of galaxies within each cube decreases, from more than half a million at top left to about 80 at lower right. Each cube is about 100 million light-years across. Galaxies assembled along vast strands of gas separated by large voids, a foam-like structure echoed in the present-day universe on large cosmic scales.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)Watch this video on the NASA.gov Video YouTube channel.Complete transcript available.",
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                        "alt_text": "These six cubes show the simulated distribution of galaxies at redshifts 9, 7, 5, 3, 2, and 1, with the corresponding cosmic ages shown. As the universe expands, the density of galaxies within each cube decreases, from more than half a million at top left to about 80 at lower right. Each cube is about 100 million light-years across. Galaxies assembled along vast strands of gas separated by large voids, a foam-like structure echoed in the present-day universe on large cosmic scales.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)Watch this video on the NASA.gov Video YouTube channel.Complete transcript available.",
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            "description": "This visualization shows the simulated galaxy distribution at redshift 9, when the universe was just 551 million years old. The cube is about 100 million light-years across and contains 528,000 galaxies.<p><p>Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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                        "media_type": "Image",
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                        "filename": "14105_GalaxyDistributionCube_B_z9_ProRes_1920x1080.mov",
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                        "alt_text": "This visualization shows the simulated galaxy distribution at redshift 9, when the universe was just 551 million years old. The cube is about 100 million light-years across and contains 528,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/14105_GalaxyDistributionCube_B_z9_1080.mp4",
                        "filename": "14105_GalaxyDistributionCube_B_z9_1080.mp4",
                        "media_type": "Movie",
                        "alt_text": "This visualization shows the simulated galaxy distribution at redshift 9, when the universe was just 551 million years old. The cube is about 100 million light-years across and contains 528,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/frames/1920x1080_16x9_30p/Z9/",
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                        "media_type": "Frames",
                        "alt_text": "This visualization shows the simulated galaxy distribution at redshift 9, when the universe was just 551 million years old. The cube is about 100 million light-years across and contains 528,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/14105_GalaxyDistributionCube_B_z9_1080.webm",
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                        "media_type": "Movie",
                        "alt_text": "This visualization shows the simulated galaxy distribution at redshift 9, when the universe was just 551 million years old. The cube is about 100 million light-years across and contains 528,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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            "description": "Same as above but for redshift 8, when the universe was 646 million years old. The cube contains 217,000 galaxies.<p><p>Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/8K_C110.png",
                        "filename": "8K_C110.png",
                        "media_type": "Image",
                        "alt_text": "Same as above but for redshift 8, when the universe was 646 million years old. The cube contains 217,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 7680,
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                {
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/4K_C110.png",
                        "filename": "4K_C110.png",
                        "media_type": "Image",
                        "alt_text": "Same as above but for redshift 8, when the universe was 646 million years old. The cube contains 217,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/4K_C110.jpg",
                        "filename": "4K_C110.jpg",
                        "media_type": "Image",
                        "alt_text": "Same as above but for redshift 8, when the universe was 646 million years old. The cube contains 217,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 3840,
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                },
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/8K_C110.jpg",
                        "filename": "8K_C110.jpg",
                        "media_type": "Image",
                        "alt_text": "Same as above but for redshift 8, when the universe was 646 million years old. The cube contains 217,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/14105_GalaxyDistributionCube_C_z8_1080.mp4",
                        "filename": "14105_GalaxyDistributionCube_C_z8_1080.mp4",
                        "media_type": "Movie",
                        "alt_text": "Same as above but for redshift 8, when the universe was 646 million years old. The cube contains 217,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 1920,
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                },
                {
                    "id": 213729,
                    "type": "media",
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                    "instance": {
                        "id": 372894,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/frames/1920x1080_16x9_30p/Z8/",
                        "filename": "Z8",
                        "media_type": "Frames",
                        "alt_text": "Same as above but for redshift 8, when the universe was 646 million years old. The cube contains 217,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 1920,
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                {
                    "id": 213730,
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                    "instance": {
                        "id": 372895,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/14105_GalaxyDistributionCube_C_z8_1080.webm",
                        "filename": "14105_GalaxyDistributionCube_C_z8_1080.webm",
                        "media_type": "Movie",
                        "alt_text": "Same as above but for redshift 8, when the universe was 646 million years old. The cube contains 217,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 1920,
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                },
                {
                    "id": 213735,
                    "type": "media",
                    "extra_data": null,
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                    "instance": {
                        "id": 372892,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/14105_GalaxyDistributionCube_C_z8_ProRes_1920x1080.mov",
                        "filename": "14105_GalaxyDistributionCube_C_z8_ProRes_1920x1080.mov",
                        "media_type": "Movie",
                        "alt_text": "Same as above but for redshift 8, when the universe was 646 million years old. The cube contains 217,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 1920,
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                        "pixels": 2073600
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            ],
            "extra_data": {}
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        {
            "id": 315081,
            "url": "https://svs.gsfc.nasa.gov/14105/#media_group_315081",
            "widget": "Video player",
            "title": "",
            "caption": "",
            "description": "Same as above but for redshift 7, when the universe was 771 million years old. The cube contains 110,000 galaxies. <p><p>Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
            "items": [
                {
                    "id": 213739,
                    "type": "media",
                    "extra_data": null,
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                    "instance": {
                        "id": 372896,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/8K_D110.png",
                        "filename": "8K_D110.png",
                        "media_type": "Image",
                        "alt_text": "Same as above but for redshift 7, when the universe was 771 million years old. The cube contains 110,000 galaxies. Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 7680,
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                },
                {
                    "id": 213740,
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                    "instance": {
                        "id": 372897,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/8K_D110.jpg",
                        "filename": "8K_D110.jpg",
                        "media_type": "Image",
                        "alt_text": "Same as above but for redshift 7, when the universe was 771 million years old. The cube contains 110,000 galaxies. Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 7680,
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                    "id": 213741,
                    "type": "media",
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                    "instance": {
                        "id": 372898,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/4K_D110.jpg",
                        "filename": "4K_D110.jpg",
                        "media_type": "Image",
                        "alt_text": "Same as above but for redshift 7, when the universe was 771 million years old. The cube contains 110,000 galaxies. Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 3840,
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                        "pixels": 8294400
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                },
                {
                    "id": 213742,
                    "type": "media",
                    "extra_data": null,
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/4K_D110.png",
                        "filename": "4K_D110.png",
                        "media_type": "Image",
                        "alt_text": "Same as above but for redshift 7, when the universe was 771 million years old. The cube contains 110,000 galaxies. Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 3840,
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                    "id": 213736,
                    "type": "media",
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                    "instance": {
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/14105_GalaxyDistributionCube_D_z7_1080.mp4",
                        "filename": "14105_GalaxyDistributionCube_D_z7_1080.mp4",
                        "media_type": "Movie",
                        "alt_text": "Same as above but for redshift 7, when the universe was 771 million years old. The cube contains 110,000 galaxies. Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 1920,
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                },
                {
                    "id": 213737,
                    "type": "media",
                    "extra_data": null,
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                    "instance": {
                        "id": 372902,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/frames/1920x1080_16x9_30p/Z7/",
                        "filename": "Z7",
                        "media_type": "Frames",
                        "alt_text": "Same as above but for redshift 7, when the universe was 771 million years old. The cube contains 110,000 galaxies. Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 1920,
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                    "instance": {
                        "id": 372903,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/14105_GalaxyDistributionCube_D_z7_1080.webm",
                        "filename": "14105_GalaxyDistributionCube_D_z7_1080.webm",
                        "media_type": "Movie",
                        "alt_text": "Same as above but for redshift 7, when the universe was 771 million years old. The cube contains 110,000 galaxies. Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 1920,
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                },
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                    "id": 213743,
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                    "instance": {
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/14105_GalaxyDistributionCube_D_z7_ProRes_1920x1080.mov",
                        "filename": "14105_GalaxyDistributionCube_D_z7_ProRes_1920x1080.mov",
                        "media_type": "Movie",
                        "alt_text": "Same as above but for redshift 7, when the universe was 771 million years old. The cube contains 110,000 galaxies. Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
                        "width": 1920,
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            "id": 315082,
            "url": "https://svs.gsfc.nasa.gov/14105/#media_group_315082",
            "widget": "Video player",
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            "caption": "",
            "description": "Redshift 6, when the universe was 942 million years old. The cube contains 49,000 galaxies.<p><p>Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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                    "id": 213747,
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/4K_E110.png",
                        "filename": "4K_E110.png",
                        "media_type": "Image",
                        "alt_text": "Redshift 6, when the universe was 942 million years old. The cube contains 49,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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                        "media_type": "Image",
                        "alt_text": "Redshift 6, when the universe was 942 million years old. The cube contains 49,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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                        "alt_text": "Redshift 6, when the universe was 942 million years old. The cube contains 49,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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                        "media_type": "Image",
                        "alt_text": "Redshift 6, when the universe was 942 million years old. The cube contains 49,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014100/a014105/14105_GalaxyDistributionCube_E_z6_1080.mp4",
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                        "media_type": "Movie",
                        "alt_text": "Redshift 6, when the universe was 942 million years old. The cube contains 49,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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                        "media_type": "Frames",
                        "alt_text": "Redshift 6, when the universe was 942 million years old. The cube contains 49,000 galaxies.Credit: NASA’s Goddard Space Flight Center/F. Reddy and Z. Zhai, Y. Wang (IPAC) and A. Benson (Carnegie Observatories)",
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            "description": "See [https://www.nasa.gov/feature/goddard/2022/nasa-s-roman-mission-will-test-competing-cosmic-acceleration-theories](https://www.nasa.gov/feature/goddard/2022/nasa-s-roman-mission-will-test-competing-cosmic-acceleration-theories)",
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            "title": "The Roman Space Telescope's High Latitude Survey Pointing Scheme",
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