Ключевые слова: abstract, astrology, astronomy, atom, atomic, black, business, circle, concept, cute, design, drawing, earth, electron, element, energy, galaxy, global, globe, icon, illustration, isolated, line, molecular, molecule, moon, nuclear, orbit, physics, planet, power, science, sign, simple, sky, solar, space, sphere, symbol, system, technology, universe, web, white, world,