stjarneðlisfræði
Stjarneðlisfræði, a term derived from Old Norse, translates to "stellar physics" or "astrophysics." It is the branch of astronomy that employs the principles of physics and chemistry to ascertain the nature of celestial objects, rather than their positions or motions. This field explores the physical and chemical properties of stars, planets, galaxies, nebulae, and other cosmic phenomena.
The primary goals of stjarneðlisfræði include understanding the formation, evolution, and death of stars, the composition
Key areas within stjarneðlisfræði include stellar structure and evolution, nucleosynthesis, stellar atmospheres, stellar populations, galactic dynamics,