Astronomers
Cosmologists
Astro physasists
Astronomer
Astronomer
An astronomer.
A space scientist
biologist means who study about life and a scientist who study about every thing
zoologists
An archaeologist
A botanist.
zoologistZoologist are scientist that study animals
Astronomers. They study all things about space.
Astronomer
They study the atmosphere using tools in physics, chemistry and biology.