I guess I should know this, but there’s a dwarf planet between Mars and Jupiter called Ceres. Apparently, it’s been known about since the early 19th century. And NASA put together some images of it from a recent mission:
So how big is this thing? Here’s an image of various objects in the asteroid belt:
Using the moon as a reference point, Ceres would be the object numbered 1 on the far left. So that’s small and that means it isn’t a planet. It’s a dwarf planet. Like Pluto, which, I was surprised to learn not too long ago, is also smaller than the moon.
So Ceres is about as wide as Texas.