Moon — the “black and white diary” of the Milky way

Long ago, what was the sun like? What happened in the Milky way and have to tell the story? If you want to know these secrets, come to the moon and read its “diary”. How does the moon write a diary Using the methods of stratum coverage, statistical analysis of impact crater density and lunar …
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Every year, about 5200 tons of “dust” from space fall on the earth

Every year, about 5200 tons of “dust” from space fall on the earth – an estimate from a recent study. These “cosmic dust” are debris from comets and asteroids. Some particles are completely vaporized in the process of entering the earth’s atmosphere, while others survive and fall to the earth and become “micrometeorites”. These fine …
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