What controversy arose in 1999 regarding the measurements of type 1a supernovae, and how did these measurements contribute to the controversy?
A) The controversy was about the accuracy of the measurements, which were deemed unreliable.
B) The controversy centered around the unexpected acceleration of the universe, challenging the prevailing understanding of its expansion.
C) The measurements indicated a decelerating universe, contradicting the established cosmological models.
D) The controversy arose due to a lack of consensus among scientists on the significance of type 1a supernovae.
