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ESA's Euclid mission is exploring the "dark universe." The space telescope's latest images offer fascinating new insights.

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"Miosis" is a medical term that describes the constriction of the pupils. Learn its causes, symptoms, and how to treat it.

Have you been paying attention to current events recently? See how many of these 10 questions you can get right. Compiled by Jeremy Engle How do these journalists craft arguments to compel ...

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