Light would still exist without the sun, but its availability and characteristics would be significantly different. The sun is the primary source of light in our solar system, emitting vast amounts of electromagnetic radiation across a wide range of wavelengths, including visible light.
In the absence of the sun, there would still be other sources of light, such as stars, galaxies, and various cosmic phenomena. However, these sources would be much more distant and potentially less intense compared to the sun.
Additionally, the sun plays a crucial role in providing the necessary energy for many natural processes on Earth. Sunlight is essential for photosynthesis, the process by which plants convert light energy into chemical energy, producing oxygen and sustaining life. The absence of the sun would have a profound impact on ecosystems and the availability of energy for most life forms on Earth.
Without the sun, our planet would be in perpetual darkness, unless other nearby celestial objects emitted enough light to provide illumination. The sky would appear vastly different, lacking the familiar presence of the sun and the resulting scattering of sunlight that creates our blue sky and colorful sunsets.
In summary, while light would still exist without the sun, its availability, intensity, and the nature of our daily experience with light would be dramatically altered. The sun is a primary source of light and energy for Earth and is intricately tied to the functioning of our ecosystems and the sustenance of life as we know it.