Life,” said Marvin dolefully, “loathe it or ignore it, you can’t like it. - Douglas Adams

And the most interesting natural structure?

A giant, two-thousand-mile-long fish in orbit around Jupiter, according to a reliable report in the Weekly World News. The photograph was very convincing, and I'm only surprised that more-reputable journals like New Scientist, or even just The Sun, haven't followed up with more details. We should be told.

Zaphod felt he was teetering on the edge of madness and wondered if he shouldn't just jump over and have done with it.

Totally mad,' he said, 'utter nonsense. But we'll do it because it's brilliant nonsense.