A planet literally made out of diamonds has been discovered. I am not kidding.
I do know someone who'd be pleased by this:
More seriously, I am old enough to remember when something like this would have been seen as not even science fiction. This would have been space opera or sword-and-planet, fit for Poul Anderson's wilder novels or something by Leigh Brackett or Henry Kuttner. And yet it exists!
What else exists out there; and why are we still sitting on our dumpers on Earth?