The Most Extreme Star Ever Found... And It Shouldn_t Exist
Close your eyes and drift into the cosmos, where a star called SDSS J102915+172927—or "Caffau's Star"—defies everything we thought we knew about the universe. It should not exist.It is nearly 13 billion years old, one of the oldest stars ever found, born shortly after the Big Bang. It is made almost entirely of hydrogen and helium, with almost none of the carbon and oxygen that theorists believe are essential for a star to form.How did it form without the necessary elements? The question has reshaped our models of the early universe, and its very existence is a quiet challenge to our…
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