All of these planets, stars, or other celestial bodies are suspended in an unimaginably vast nothingness, composed of countless celestial bodies forming galaxies, and countless galaxies forming the universe. The size of the universe is measured in light-years; a light-year is the distance light travels in one year, and the speed of light is close to 300,000 kilometers per second, while the diameter of the observable universe is 93 billion light-years...
This was indeed a grand world beyond the understanding and imagination of these experts. Some went so far as to roughly calculate the size of the universe, then felt an indescribable smallness, which even triggered an emergency incident investigation that Lu Yuanming wasn't aware of.
