Science!
As is so common in these days of exoplanetary discovery & new instruments with which to probe the mysteries of the heavens, it appears that our assumptions about the structure & nature of Mercury, the planet closest to the Accursed Sun, might have been rubbish: iron core-link & icy shadows-link. Of course, upon reflection our assumptions about what constituted a "normal" solar system—rocky planets closer to the star with gas giants farther out—was based on a sample size of one, which is an insufficient basis for making broader generalizations. Also, what we see about Mercury's inner structure might be unprecedented, but we must also consider that our precedents are all set by just a few planets: Venus, the Earth, Mars, & perhaps Pluto. I say the following not with disdain but with enthusiasm: we don't know jack! "There's so much to learn!"

Science!

The Rebel Black Dot Song of the Day
The Starting Line, "Saddest Girl Story" from Say It Like You Mean It (T.L.A.M.)