Why can radio astronomers make observations at any time during the day but optical astronomers are limited mostly to making their observations at night?

Radio astronomers can observe at any time of day because radio waves can penetrate the Earth's atmosphere and are not significantly affected by sunlight or atmospheric conditions. In contrast, optical astronomers rely on visible light, which is overwhelmed by sunlight during the day, making it difficult to observe celestial objects. Additionally, the brightness of the sky during the day obscures faint astronomical objects, limiting optical observations primarily to nighttime.