In a rare double cosmic treat and once-in-a-lifetime opportunity, stargazers can look to the night sky for two rare comets through October 2025 — and Comet Lemmon and Comet SWAN are visible starting ...
Japan's Hayabusa2 spacecraft returned spectacular images of a near-Earth asteroid following a super-close flyby on July 5, but heated debate was needed before teams signed off on the daring attempt.
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