The Lonely EarthWolfgang Held·November 11, 2022In 1961, the astrophysicist Francis Drake came up with the equation later named after him, with which one should be...ColumnMath astronomy·1 min read
Where is the Middle?Wolfgang Held·July 1, 2022Mathematically, there are three answers. The simplest way to create the middle is the arithmetic mean. For example: to find...EssayMath astronomy·1 min read
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