 "Astrophysics
(Greek: Astro - meaning "star", and Greek: physis –
φύσις - meaning "nature") is the 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. Among
the objects studied are
galaxies,
stars,
planets,
exoplanets, the
interstellar medium and the
cosmic microwave background. Their emissions are examined across all
parts of the
electromagnetic spectrum, and the properties examined include
luminosity,
density,
temperature, and
chemical composition. The study of
cosmology addresses questions of astrophysics at scales much larger
than the size of particular gravitationally-bound objects in the
universe.."
Source:
Wikipedia |
