Every planet in the Solar System has its idiosyncrasies, but Uranus is, truly, one of a kind. Not only is it tipped sideways so its rotational axis is practically parallel to its orbital plane, it smells terrible, it's leaking everywhere, its magnetic field is an utter mess, and it has rings unlike any other planetary rings in the Solar System.
But wait, there's more. Around 20 years ago, astronomers turned their instruments to capture X-ray emissions coming from Saturn, Uranus, and Neptune. Unlike every planet before it, Uranus had nary a flash to be seen. Now, for the first time, we've detected X-rays emanating from the Solar System's oddest ball, and it's not quite clear where they're coming from or what they mean.