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Asteroid Fragment Reveals a Strange Mineral Never Seen on Earth
The asteroid Ryugu is an echo from the deep, distant past. Two tiny grains of the rock, delivered to Earth in 2020 by the ...
PARIS. Academy of Sciences, October 3. —M. Van Tieghem in the chair.—The analysis of some commercial specimens of calcium carbide, by M. Henri Moissan. If calcium carbide is prepared from impure ...
A NEW and extremely simple mode of preparing phosphoretted hydrogen is described by Prof. Retgers in the current Zeitschrift für Anorganische Chemie. After reviewing the usual mode of preparing the ...
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