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  <titleInfo>
    <title>M87</title>
    <subTitle>Chandra captures x-rays in coordination with EHT</subTitle>
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  <titleInfo type="alternative">
    <title>Messier 87: Chandra captures x-rays in coordination with EHT</title>
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    <namePart>National Aeronautics and Space Administration,</namePart>
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    <dateIssued encoding="marc">2019</dateIssued>
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  <physicalDescription>
    <extent>1 online resource ([2] pages) : color illustrations</extent>
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  <note>GPO Cataloging Record Distribution Program (CRDP).</note>
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    <name type="corporate">
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  <subject authority="lcsh">
    <topic>Galaxies</topic>
    <topic>Magnetic fields</topic>
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    <topic>Black holes (Astronomy)</topic>
    <topic>Observations</topic>
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    <geographic>M87 (Galaxy)</geographic>
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