Skeptophilia
Fighting Gullibility with Sarcasm, 6 days a week
Showing posts with label
Stephenson 2-18
.
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Showing posts with label
Stephenson 2-18
.
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Tuesday, May 2, 2023
Off the chart
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Way back around 1910, Danish astronomer Ejnar Hertzsprung and American astronomer Henry Norris Russell independently found a curious patte...
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