What are the branches of astronomy?

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Apr 4, 2016

Answer:

Branches of astronomy:

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Astrobiology – studies the advent and evolution of biological systems in the universe.
Astrophysics – branch of astronomy that deals with the physics of the universe, including the physical properties of celestial objects, as well as their interactions and behavior.

Compact objects – this subdiscipline studies very dense matter in white dwarfs and neutron stars and their effects on environments including accretion.
Physical cosmology – origin and evolution of the universe as a whole. The study of cosmology is theoretical astrophysics at its largest scale.

Computational astrophysics – The study of astrophysics using computational methods and tools to develop computational models.
Galactic astronomy – deals with the structure and components of our galaxy and of other galaxies.
High energy astrophysics – studies phenomena occurring at high energies including active galactic nuclei, supernovae, gamma-ray bursts, quasars, and shocks.

Interstellar astrophysics – study of the interstellar medium, intergalactic medium and dust.
Extragalactic astronomy – study of objects (mainly galaxies) outside our galaxy, including Galaxy formation and evolution.
Stellar astronomy – concerned with Star formation, physical properties, main sequence life span, variability, stellar evolution and extinction.

Plasma astrophysics – studies properties of plasma in outer space.
Relativistic astrophysics – studies effects of special relativity and general relativity in astrophysical contexts including gravitational waves, gravitational lensing and black holes.
Solar physics – Sun and its interaction with the remainder of the Solar System and interstellar space.

Planetary Science – study of planets, moons, and planetary systems.

Photometry – study of how bright celestial objects are when passed through different filters
Spectroscopy – study of the spectra of astronomical objects
Astrometry – study of the position of objects in the sky and their changes of position. Defines the system of coordinates used and the kinematics of objects in our galaxy.

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Apr 4, 2016

Answer:

There are broadly two branches: Observational astronomy and Theoretical astronomy.

Explanation:

Observational astronomy is concerned with observing celestial objects by using telescopes and other astronomical devices, and recording of data therefrom.

There are two sub-branches of observational astronomy:

  • Optical astronomy: The study of celestial objects in the visible part of the electromagnetic spectrum.
  • Non-optical astronomy: The use of instruments to study objects in the radio through gamma-ray wavelengths.

Theoretical astronomy is concerned with modeling and analyzing how various astronomical systems might have evolved.

There is an allied branch called Astrochemistry, which is the study of the abundance and reactions of chemical elements and molecules in the universe.

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