TIL Hisako Koyama, a female Japanese astronomer who hand drew sunspots every day for more than 40 years. Her detailed sketches aid researchers in studying solar cycles and the sun's magnetic fields


TIL Hisako Koyama, a female Japanese astronomer who hand drew sunspots every day for more than 40 years. Her detailed sketches aid researchers in studying solar cycles and the sun's magnetic fields https://www.pbs.org/newshour/science/japanese-hidden-figure-enlightened-world-sunspot-sketches Specialist_Check February 21, 2022 at 11:48PM

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