Probes are instruments or devices used to gather information from various environments, often in scientific or exploratory contexts. They can be designed to measure physical properties, collect samples, or transmit data back to researchers. Probes are commonly used in fields like space exploration, oceanography, and medical diagnostics. In space exploration, for example, robotic probes like the Voyager spacecraft travel beyond Earth to study planets and their moons. In medicine, biopsy probes are used to extract tissue samples for analysis. Overall, probes play a crucial role in expanding our understanding of the world and beyond.