Science wallpaper on telephone / page 16

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A black ball on the glass

Desktop wallpapers on the theme of astronomy

A picture of the planet earth taken from space

A picture of the planet Earth taken from space

Guitar over water fantasy

Music desktop annotation

Music Desktop Annotation

The struggle of color in the cosmic sky

The planets lined up in a row is an amazing phenomenon

Bright stars of a distant galaxy

A picture from space with a view of the planets

Futuristic map of the earth's surface in green light

A beautiful galaxy with planets

3d illustration. green spiral

3D illustration. Green Spiral

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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. ).