File talk:Voyager Golden Record Cover Explanation.svg

How could Aliens know what "second" is? When it is arbitrarily chosen on Earth.

you make a solid point. Perhaps it could be viewed as a "moment of thought" but then again that is assuming the neuroscience of an unknown organism. perhaps they could show "the duration of 7009919263177000000♠9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom" — Preceding unsigned comment added by Agent of the nine (talk • contribs) 15:22, 27 May 2015 (UTC)