This week in science
Webb spots Neptune’s rings and more: Understand the world through 9 images
NASA/JPL-Caltech/ASU/MSSS
NASA uncovered possible biosignatures on Mars the week of September 15–21, as the Webb telescope got the clearest view of Neptune in three decades.
Historical/Corbis Historical/Getty Images
Here are the biggest science stories of the week, told in 9 stunning images.
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