Astronomical picture of the world
For centuries, man has sought to unravel the mystery of the great world "order" of the Universe, which the ancient Greek philosophers called Cosmos (translated from Greek - "order", "beauty"),…

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The first models of the world.
Despite the high level of astronomical information of the peoples of the ancient East, their views on the structure of the world were limited to direct visual sensations. Therefore, in…

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Lunar mineralogy
How did lunar craters form? This issue has led to a long discussion between supporters of two hypotheses on the origin of lunar craters: volcanic and meteorite. According to the…

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that gravity

Asteroid shape and rotation

Asteroids are so small that gravity is negligible. She is not able to give them the shape of a ball, which gives the planets and their large companions, crushing and ramming their substance. An important role is played by the phenomenon of fluidity. The high mountains on Earth at the bottom “sprawl”, because the strength of the rocks is insufficient to withstand loads of many tons per 1 cm3, and the stone, without crushing, without breaking, flows, although very slowly.

On asteroids with a diameter of up to 300-400 km, due to their low weight, such a phenomenon of fluidity is completely absent, while on the largest asteroids it occurs extremely slowly, and even then only Continue reading

The sun
The sun - the central body of the solar system - is a hot plasma ball. The sun is the star closest to Earth. The light from it reaches us…

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Birth of the sun
And now the nebula has acquired a completely different look. A huge dark, slightly flattened cloud rotates majestically in the middle, and around it at different distances floating in circular…

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Hubble Space Telescope
From the very beginning of astronomy, from the time of Galileo, astronomers have one common goal: to see more, to see further, to see deeper. And the Hubble Space Telescope,…

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Man on the moon
Work on this program began in the USA in the late 60s. It was decided to carry out a man’s flight to the moon and his successful return to Earth…

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