Voyager is just the latest craft to go past the outer limits of our own solar system.
Pioneer 10 is now silent, having sent its last signal due to decay of its power source. It has or is about to cross the heliosphere - the border of where the solar wind interacts with the universe.
Voyager 1 has now passed Pioneer 10, even though it was launched later, and is the farthest manmade object from Earth.
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