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Elegant christmas tree in the middle of the forest. a lot of gifts under the christmas tree

Elegant Christmas tree in the middle of the forest. A lot of gifts under the Christmas tree

A cluster of stars in an unknown galaxy

The dance of moons and planets in outer space

Photo processing of a spherical planet and moon

Bright puzzle wallpaper template

Bright Puzzle wallpaper template

Space exploration to the dark moon

Bright planet earth among other planets

Bright planet Earth among other planets

The moon is a satellite of the earth

The moon is a satellite of the Earth

Spaceships explore the territory of the moon

Planets in the starry sky are mysterious

Moon phases depending on the month

Spherical energy sphere abstraction

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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. ).