Stellar contamination refers to the impact of light, radiation, or material from nearby stars on observations of a target star or object in space. This can occur when the light or radiation from a neighboring star interferes with the measurements or analysis of the target star's properties, such as its temperature, composition, or distance. Stellar contamination is important to consider in astronomical research, particularly in studies of exoplanets, binary star systems, or other objects that are in close proximity to other stars. Researchers must account for and mitigate the effects of stellar contamination in their observations and data analysis to ensure the accuracy and reliability of their results.