NOMENCLATURE OF LUNAR FEATURES

About: 

• The images show impact craters named after various scientists — (Arnold) Sommerfeld (Germany), (Daniel) Kirkwood (US), Mitra (India), (Charles) Hermite (France) etc.
  
  
• Mitra (1890-1963), born in Bengal, was a physicist and Padma Bhushan winner.
  
  
• The system of nomenclature of lunar features is now standardised. According to a resolution by the International Astronomical Union in 1973,
  • Crater and crater-like formations are given the names of astronomers or eminent scientists , posthumously.
    
    
  • Mountains are given names corresponding to the geographical names of mountains of the Earth and
    
    
  • Extensive dark surfaces are given names that correspond to the mental states of humans.