So far, what is the furthest space exploration machines have been able to reach in the universe? Thanks.
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1$\begingroup$ Duplicate question: space.stackexchange.com/q/3010/265 . $\endgroup$ – Mark Adler May 30 '16 at 23:42
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$\begingroup$ Thanks, I did not know Voyager one from 1977 was still around. $\endgroup$ – Jack Maddington May 31 '16 at 8:09
