Ключевые слова: art, astrophysics, celestial body, color, concept, contour, cosmos, deep space, design, discovery, drawing, education, flat, galaxy, gas, geomagnetic, gradient, icon, illustration, image, isolated, line, linear, lineart, mercury, mission, modern, observatory, outline, pictogram, pixel perfect, planetary astronomy, purple, ring planet, saturn, school, science project, sign, simple, solar system, space, symbol, telescope, thin, titan, universe, web,