What major cosmological conclusion relied significantly on the study of Type Ia supernovae as standard candles?

Answer

The discovery that the expansion of the universe is accelerating.

The technique utilizing Type Ia supernovae brightness to determine distances was essential in the discovery concerning the accelerating expansion of the universe.

What major cosmological conclusion relied significantly on the study of Type Ia supernovae as standard candles?
astronomyuniversebrightnesssupernovas