Which of the following best describes a space probe?

A space probe is specifically designed to explore outer space, gathering data and transmitting it back to Earth for analysis. These instruments are often sent to distant planets, moons, asteroids, or comets to study their composition, atmosphere, surface conditions, and other characteristics that are not easily observable from Earth. Unlike other options, which pertain to terrestrial applications or human travel, a space probe's primary function is to extend our knowledge of the universe beyond our planet, often in environments that would be challenging or impossible for humans to explore directly. This makes option C the most accurate description.