What
are the different topics or subfields that make up
astronomy research?
Planetary science and
geology/geophysics
Solar system, space plasma;
Solar physics/astronomy Þ Stellar astronomy ÞInterstellar medium Þ The Milky Way and other galaxies
Þ Large scale
structure Þ
Cosmology Þ
Astroparticle physics
Most fields have observational sides and theoretical
sides that are
viewed as being relatively separate from each other.