A superhot superdense superfast mini-Earth… and it's practically next door

Speaking of weird exoplanets, astronomers have another oddball planet, and it's seriously oddballish. It's smaller than Earth but extremely dense, and it orbits its host star very close in, so its "year" is far less than an Earth day. The good news is it's pretty close to us, galactically speaking, so follow-up studies should be possible.