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        <loc>https://www.iflscience.com/how-do-you-weigh-an-octopus-or-a-giraffe-or-a-whale-or-a-supermassive-black-hole-84082</loc>
        <lastmod>2026-07-13T13:12:42+00:00</lastmod>
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            <news:publication_date>2026-07-13T13:12:23+00:00</news:publication_date>
            <news:title><![CDATA[How Do You Weigh An Octopus Or A Giraffe, Or A Whale, Or A Supermassive Black Hole?]]></news:title>
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        <loc>https://www.iflscience.com/marie-curie-died-from-her-radioactivity-research-so-how-did-they-decontaminate-her-lab-and-turn-it-into-a-museum-84079</loc>
        <lastmod>2026-07-13T13:09:07+00:00</lastmod>
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            <news:publication_date>2026-07-13T13:09:06+00:00</news:publication_date>
            <news:title><![CDATA[Marie Curie Died From Her Radioactivity Research, So How Did They Decontaminate Her Lab And Turn It Into A Museum?]]></news:title>
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        <loc>https://www.iflscience.com/how-the-worlds-largest-digital-camera-will-take-a-10-year-long-movie-of-the-night-sky-84075</loc>
        <lastmod>2026-07-13T10:42:21+00:00</lastmod>
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            <news:publication_date>2026-07-13T10:42:20+00:00</news:publication_date>
            <news:title><![CDATA[How The World's Largest Digital Camera Will Take A 10-Year-Long Movie Of The Night Sky]]></news:title>
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            <image:title><![CDATA[LSST camera]]></image:title>
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            <image:title><![CDATA[vera rubin observatory]]></image:title>
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        <loc>https://www.iflscience.com/32-symbols-found-in-prehistoric-caves-across-europe-could-be-the-oldest-systems-of-communication-in-the-world-84077</loc>
        <lastmod>2026-07-13T10:41:38+00:00</lastmod>
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            <news:publication_date>2026-07-13T10:41:30+00:00</news:publication_date>
            <news:title><![CDATA[32 Symbols Found In Prehistoric Caves Across Europe Could Be The Oldest Systems Of Communication In The World]]></news:title>
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            <image:title><![CDATA[Cave]]></image:title>
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