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A burning symbol on a black background

Futuristic picture of spider-man on the background of the city

Blue spherical sphere at night

Purple balls on a dark background

Planets against the background of a shining star

The endless misty space of the galaxy

The milky way with the location of the planets

The Milky Way with the location of the planets

Planets in the galaxy. dark background

Planets in the galaxy. Dark background

The moon is a view from the asteroid belt of another planet

The planet saturn. outer space

The planet Saturn. Outer space

A picture of metamorphosis with a falling tile

A picture of Metamorphosis with a falling tile

Silver robot on a black background

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Система знаний о закономерностях в развитии природы, общества и мышления, а также отдельная отрасль таких знаний. То, что поучает, даёт опыт, урок (в 4 знач.; разг. ).