Global amount of dust in the universe
  It is pointed out that the total amount of dust in the Universe that is
produced in stellar evolution in the entire cosmic time is consistent with the
observed amount, if we add to the dust amount inferred for galactic discs the
amount recently uncovered in galactic haloes and the surrounding of galaxies in
reddening of the quasar light passing through the vicinity of galaxies. The
inventory concerning the dust closes. This implies that dust produced from
stars should survive effectively for the cosmic time, and that a substantial
amount of dust is produced in the burning phase of evolved stars of
intermedaite mass.
