Hisako Koyama Tracked Sunspots For Almost Half A Century
International Astronomy Day is coming up this weekend, so we’re talking about Hisako Koyama, an astronomer who hand-drew tens of thousands of daily observations of the sun and its spots.
International Astronomy Day is coming up this weekend, so we’re talking about Hisako Koyama, an astronomer who hand-drew tens of thousands of daily observations of the sun and its spots.