Science wallpaper on Desktop / page 49

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Solar eclipse in colors

Planet earth with our sights

Planet Earth with our sights

Human movement depicted in the illustration

Beautiful desktop extraction

Cosmic landscape with a dying planet

The scientific telescope turned its gaze to the sky

Red light between planets

A beautiful constellation in outer space

Creating a new planet out of gas and dust

Photos of planet earth from space

Photos of planet Earth from space

Red flame leading to infinity

Beautiful photos of planets 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. ).