One of the cool things that happened in 2013 is that Voyager 1 has left our solar system. This time it was really, for sure, no kidding! There have been some previous occasions where it left, but this time we really mean it. (Truth is, it’s still way inside the Oort cloud, so in some sense it’s merely left the city for the ‘burbs.)
Say rather that Voyager 1 no longer flies in skies affected by the sun. The heliosphere, the giant fart bubble around our solar system, is filled with our sun’s gassy emissions. Outside that bubble is the galactic ass gas of a billion other suns. Voyager 1, for the first time in human history, samples farts not our own.
It got me thinking about our interstellar golden record: Earth’s Greatest Hits!