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COVID 19 Articles

Astronauts’ hearts just passed a surprising test for Mars

A new study of astronauts aboard the International Space Station suggests that human hearts can adapt well to extended weightlessness and function under Mars’s weaker gravity, offering encouragement for future crewed missions.

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The first midterm primaries of 2026, by the numbers

Texas held the nation’s first major midterm primaries this week, with the Republican Senate race headed to a runoff and voting issues affecting the Democratic contest. Multiple House races also advanced to runoffs amid record spending.

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