artist's rendering of NASA Peseverance Mars rover

This week in science

NASA Perseverance Mars depot and more: Understand the world through 7 images

NASA

NASA

NASA’s Perseverance rover started building a crucial backup on Mars the week of December 21–28, as researchers found a new earliest example of Stone Age technology in the Americas.

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

© Jesse Delia

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