what is astronomy?
what r different branches of it
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Astronomy is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets.
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We can divide astronomy into 4 sub-fields: ASTROPHYSICS: Applying the laws of physics in space. ASTROMETRY: Mapping celestial bodies. ASTROGEOLOGY: Examining rocks, terrain and material in space. ASTROBIOLOGY: Searching for life outside Earth
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