Life detection refers to the scientific methods used to identify signs of life, particularly in environments beyond Earth. This includes searching for biological markers, such as organic molecules or specific gases, that indicate the presence of living organisms. Instruments like spectrometers and rovers are often employed in this research. In the context of space exploration, missions to planets like Mars and moons such as Europa aim to uncover evidence of past or present life. These efforts are crucial for understanding the potential for life elsewhere in the universe and the conditions that support it.