Presumably when Astronomers infer Dark matter (like Catherine Heymans) by studying how photons have been affected on their journey, they can only do this wit... Shared via Copilot

#Astronomers infer #DarkMatter (like #CatherineHeymans) by #studying how #photons have been affected on their journey. They do this with the slightly deflected...cos they have info about its origin. #BBC #LifeScientific #Science
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