xkcd #3310: Rejected Space Mission Profiles
Title text:
Although NASA agreed that Voyager 2 'seemed lonely' they decided against launching a companion orbiter mission after further measurements indicated that the spacecraft actually preferred the peace and quiet.
Transcript:
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Source: https://xkcd.com/3310/
I'm sure there's gotta be some kind of solid nugget in Jupiter's core. I mean a rover would never make it that deep intact, but still.
"kind of" does a lot of work here.