Recent results from very bright supernovae in very distant galaxies seem to indicate that the expansion of the universe:
A) has now stopped and the universe will shortly begin to contract again toward a Big Crunch.
B) is decelerating (slowing down).
C) is continuing at a constant rate and has done so since just after the Big Bang.
D) is accelerating (speeding up).

Question

Quizplus · Accepted Answer

Recent results from supernovae studies indicate that the expansion of the universe is accelerating. This is believed to be caused by dark energy, a mysterious force that seems to be pushing the universe apart at an increasing rate. This result was unexpected and has led to a reevaluation of our understanding of the forces that govern the universe.

Recent Results from Very Bright Supernovae in Very Distant Galaxies