This week in science

Perseverance hunts for Martian life and more: Understand the world in 8 images

Updated: Feb. 20, 2024

Originally Published: July 22, 2021

NASA

A collections drawer of extinct Xerces blue butterflies

NASA’s Perseverance rover searched for life on Mars as scientists studied extinct animals on Earth and made stunning observations in deep space the week of July 15–22.

optical and infrared image of galaxy cluster Abell 1775

PanSTARRS

Here are the biggest science stories of the week, told in 8 stunning images.

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