a space probe is used for collecting / analyzing materials / samples / information
space_capsule is spacecraft. nasa_space_mission is space_exploration. space_probe is information_gathering_device. pioneer_probe is space_probe. space_probe is not information_gathering_device. space_exploration is new_science. probe is exploration. space_probe is not unmanned_space_platform. space_probe is unmanned_space_platform. space_probe is guided_missile.