Science wallpaper on telephone / page 14

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In a matter of seconds, night turns into day

Christmas tree balls on blue

Dna chain computer 3d graphics

Spaceships are preparing for battle

Evening twilight in blue tones

Saltat with a machine gun in the smoke

Weapons and army: heavy warriors

Weapons and Army: Heavy Warriors

Star wars are depicted in one portrait

Star Wars are depicted in one portrait

The solar system of planets in the galaxy

View from space of planet earth

View from space of planet Earth

Nebula and galaxy in astronomy

Planets light sky mountains stars

Planets light sky Mountains stars

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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. ).