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A hand-drawn anime girl walks on the moon

A hand-drawn anime girl walks on the moon

A hand-drawn anime girl walks on the moon

Solar eclipse in colors

Solar eclipse in colors

Solar eclipse in colors

Photos of the earth for an astronomy lesson

Photos of the earth for an astronomy lesson

Photos of the earth for an astronomy lesson

The end of the universe, the death of planet earth

The end of the universe, the death of planet earth

The end of the universe, the death of planet earth

Human movement depicted in the illustration

Human movement depicted in the illustration

Human movement depicted in the illustration

Beautiful desktop extraction

Beautiful desktop extraction

Beautiful desktop extraction

Cosmic landscape with a dying planet

Cosmic landscape with a dying planet

Cosmic landscape with a dying planet

An invention that is not yet clear to everyone

An invention that is not yet clear to everyone

An invention that is not yet clear to everyone

The scientific telescope turned its gaze to the sky

The scientific telescope turned its gaze to the sky

The scientific telescope turned its gaze to the sky

Red light between planets

Red light between planets

Red light between planets

A beautiful constellation in outer space

A beautiful constellation in outer space

A beautiful constellation in outer space

Saturn, the Moon and asteroids in space

Saturn, the moon and asteroids in space

Saturn, the Moon and asteroids in space

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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. ).