The fact that we can still receive radio signals from the probe is by itself amazing. The distance does necessitate a six hour wait until they are received by NASA but considering the probe dates from 1977 when it was launched, this has to be one of our most enduring accomplishments.
It is difficult to imagine something made by us being so far away. The vastness of the environment it is in means it will take another 40,000 years before it reaches the very nearest star and even then it will be two light years away. The sad thing about all this is that even if there is anyone left on Earth, there will be no radio signal to indicate it had arrived there as its plutonium batteries will run dry in 10-15 years.
The Arthur C Clarke in me would like to think that some distant space traveller will find it, give it an oil and brush up, recharge its batteries and send it on its way again. The likelihood is that it will simply drift through space for eternity.
I do though like to cling to the possibility that it will be discovered by some distant civilisation and its on board gold-plated video disc played to reveal the 'sounds of Earth', messages of greeting and photographs taken of a very distant blue planet.


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