The Frontier 3 probe launched to Neidon 6 years ago has stopped transmitting. KSEA engineers and scientists think that the crafts solar arrays just weren’t sufficient for transmitting that far out. Just a few weeks ago Frontier 3 was still transmitting at near full strength thanks to the Deep Space Network KSEA has been building, however.
A probe is already on its way to Neidon, Pathfinder 2!
Kerbal States | Kerbin Space Exploration Administration 