At present, just under 250 spacecraft have been launched as part of such missions.the first successfully launched automatic interplanetary station was Luna-1, which flew near the moon.
The most remote traveler is Voyager 1. The current distance of Voyager 1 from Earth and the Sun is 13 billion km. On Board the device is fixed a case with a gold plate, where the location of the Earth is indicated for the alleged aliens, as well as a number of images and sounds are recorded.