Given that white dwarf supernovae are such good standard candles, why don't we use them to measure the distance to all galaxies?
A)We cannot see them beyond a distance of about 100 million light- years.
B)They are rare events, so we have observed them in only a tiny fraction of all galaxies.
C)They can occur only in spiral galaxies, not elliptical galaxies.
D)We would, but we don't have enough telescopes.

Question

Quizplus · Accepted Answer

White dwarf supernovae are indeed excellent standard candles due to their consistent peak brightness, but they are rare events. This rarity means that we have only observed them in a small fraction of all galaxies, limiting their utility for measuring distances to all galaxies.

Given That White Dwarf Supernovae Are Such Good Standard Candles