It was 4 a.m. on Nov. 25 at the top of Hawaii's dormant Maunakea volcano. The process to view the comet took less time than expected. On the main screen, the subject at hand, interstellar comet ...
When interstellar comet 3I/ATLAS swept past the Sun, it arrived wrapped in a gas cloud dominated by carbon dioxide, unlike almost anything astronomers had seen from a comet before. But by the time ...
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