This is the World's most ginormous atom. It is squillioons times bigger than a real atom and was built for a special party in Belgium a long time ago.
Atoms are really small. So small you can't see them, even if you squish your eyes and stare really hard. But atoms are everywhere, and when they are all piled up, they make everything in the whole world. Even the Atomium is made of lots and lots of atoms. Mr Teacher told me this. He said you can even make them go bang, but that's not a big or clever thing to do.
Quickos loves quantum mechanics.