a space probe can orbit / land on other planets
only_robitic_probes has landed_on_planets space_probe is guided_missile. space_satellite is space_vehicle. outer_space is space. mars_odyssey_probe is orbiting_red_planet. space_probe is information_gathering_device. pioneer_probe is space_probe. space_probe is unmanned_space_platform. space_satellite is satellite. nasa_space_mission is space_exploration.