The three major clades of bilaterian animals are the

The three major clades of bilaterian animals are the ecdysozoa, lophotrochozoa, and deiterstomia. 
Ecdysozoa are organisms that include insects, crustaceans, chelicerata, and myriapods. Lophoytochozoa include fossil organisms. Deiterstomia include chordata, echinodermata, and hemichordata.
Bilaterian animals have bilateral symmetry, meaning that they have a head, and a tail, as well as back and belly. 

We are not able to see the stars. light prevents our seeing the stars. i hope it kinda : )