Darkness is commonly defined as the absence or lack of light. It refers to the condition where there is minimal or no illumination. In everyday language, we often use the term darkness to describe situations where there is little or no visible light.
In the context of outer space, darkness can be understood as the absence of light sources like stars and galaxies. In the vast regions between celestial objects, there are areas where light from distant stars and galaxies may not reach. These regions may appear dark to our eyes because there is no significant light source to illuminate them. However, it's important to note that even in seemingly dark areas of space, there is still some amount of background radiation and ambient light present, such as the cosmic microwave background radiation.
Regarding emptiness and nothingness, these concepts can be challenging to define precisely. Emptiness typically refers to the state of being devoid of substance, content, or objects. It implies a lack of physical matter or tangible entities. In the context of space, the term emptiness can describe the vast regions between celestial objects where matter is sparsely distributed.
However, it is important to note that even in seemingly empty regions of space, there are various forms of energy, particles, and fields present. These can include things like interstellar gas, dust, cosmic rays, and background radiation. So, while space may appear empty or void of familiar objects, it is not a perfect vacuum devoid of everything. Our understanding of the true nature of space is continually evolving as scientific research and observations provide new insights.