This week in science

Perseverance’s first year on Mars and more: Understand the world through 7 images

by Robin Bea
NASA/JPL-Caltech

Xinhua News Agency/Xinhua News Agency/Getty Images

NASA’s Perseverance rover reached its first anniversary on Mars the week of February 17–23, as advances in robotics and stem cell therapy pointed to new frontiers in medicine.

Here are the week’s biggest science stories, told in 7 spectacular images.

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