What are the advantages and disadvantages of space probes?

What are the advantages and disadvantages of a space probe compared to a piloted spacecraft? Compared to manned spacecrafts, space probes have the advantage of being smaller and requiring less resources, traveling farther over longer periods of time, and going places too dangerous for humans.

Explanation:

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds