The best replacement for quasar is pulsar.

The best alternatives to quasar are rated as following:
★★★★★  pulsar
★★  black hole
★★  tanda
★★  supernova
★  blazar
★  storm front
★  lightstim
★  gamma ray burst
★  gorz
  nuface
  tria blue light
  firestorm
  ghost whisperer
  palovia
  supernovae
  dpl
  baby quasar md
  gamma burst
  ansr
  evis md
  ultra quasar

Your alternative for quasar is not listed? Suggest!
Speaking about quasar, one probably shouldn't forget about laval.

Other search terms related to quasar and their ratings are:
★★★★★ laval
You have in mind a companion for quasar and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of quasar in all years. Click on graph for more.
quasar
pulsar
black hole