Covers suggested databases etc.
"Earth and physical sciences, including astronomy, chemistry, geography, geographic information systems, geology, and physics are disciplines classified as natural sciences. They generally involve nonliving materials and the principles of fundamental relationships and laws in the universe."
-- Description of the Astronomy Department from San Diego City College Catalog 2011-2012
Milky Way Galaxy: Atlas Image courtesy of 2MASS/UMass/IPAC-Caltech/NASA/NSF. Public domain.
Total solar eclipse: Barbara Ring, Casper Wyoming, August 21, 2017