  High quality spectra to be produced by SUBARU 8 meter telescope will be
extremely valuable for numerous astronomical projects. Here I concentrate on
two classical types of weak broad line objects -- distant supernovae and white
dwarfs -- with emphasis of their importance for fundamental physics, not only
for astronomy. With regard to recent results of MACHO experiment and HST weak
star counts I discuss one exotic possibility: invisible stars made of the so
called ``mirror'' matter.
