Create a stunning and mesmerizing artwork that captures the essence of space and celestial bodies while reflecting on the vastness of the universe and the smallness of humanity. Use vibrant colors to depict distant galaxies, shimmering stars, and swirling nebulae. Illustrate this vastness with a sense of mystery, featuring planets with unique textures and atmospheres, and include a comet streaking across the scene. The composition should evoke feelings of wonder and curiosity about the cosmos, blending elements of realism and abstract art to convey both the beauty and complexity of the universe, as well as the preciousness of life within it.