Definition: The term "hektostere" is a scientific term that refers to a system of measurement used in astronomy and physics. It was first introduced by the German astronomer Carl Friedrich Gauss in his 1809 paper "On the Measurement of the Surface Areas of Planets". Hektostere (or hectograms) are units of area used to measure the surface areas of celestial bodies, including planets, moons, asteroids, and comets. They are often abbreviated as "ha"
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