noun (n)

• the branch of astronomy concerned with the physical and chemical properties of celestial bodies

  cabang dari astronomi berkenaan dengan fizikal dan kimia sifat syurga tubuh

  source: wordnet30
• The science treating of the physical characteristics of the stars and other heavenly bodies, their chemical constitution, light, heat, atmospheres, etc.

  ilmu memperlakukan dari fizikal karakteristik dari bintang dan tubuh lain surgawi, mereka kimia konstitusi, cahaya, panas, atmospheres, dll.

  source: webster1913