Seyfert galaxy vs constellation

Seyfert galaxy

constellation

noun
  • A configuration or grouping. 

  • Any of the 88 regions of the sky officially recognized by the IAU, including all stars and celestial bodies in the region. 

  • A fleet of satellites of the same purpose (such as the set of GPS satellites, or Iridium satcom fleet). 

  • An asterism, an arbitrary formation of stars perceived as a figure or pattern, or a division of the sky including it, especially one officially recognised by astronomers. 

  • An image associated with a group of stars. 

  • A wide, seemingly unlimited assortment. 

  • A network of connections that exists between people who are in polyamorous relationships, for example between one person, their partner, and that person's partner. 

  • The configuration of planets at a given time (notably of birth), as used for determining a horoscope. 

How often have the words Seyfert galaxy and constellation occurred in a corpus of books? (source: Google Ngram Viewer )