We have constellations, but nothing like this world's. Or likely yours.

... maybe we don't have your bugs, either. Even our giant bugs don't look like this. [Konohagakure's Forest of Death has some weird things in it, but nothing on the level of the dragon.]

The red thing was made of cloth. It looked like it was made to match the other side of the tail. [For flight purposes, probably. Sasuke's dealt with raptors enough to know that tail damage can impede flight.]