TED Talksのインスタグラム(ted) - 8月21日 03時35分

At first glance, this might look like a bunch of stars. But most of those blips of light are massive groups of galaxies clustered together by gravity. Teenage scientist Henry Lin calls these galaxy clusters “the universe’s most massive laboratories,” and studies them to better understand how the universe works. Find out how they help explain scientific mysteries like dark matter and gravity at on.ted.com/clusters

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