Scientists who study the universe are known as cosmologists.
Astronomer
Cell biologists or sometimes cytologists.
Our scientists have given it the name "force of gravity".
Scientists who study classification (taxonomy) are known as taxonomists.
Astrophysicists
Well scientists do study them but there isn't an actual name of the study of them.
archeologist
paleontologist
boner jockeys
Paleontologist
A Volcanologist.
what is the name given to the study of migration