Researchers have determined that the Universe began expanding subsequent to the Big Bang.When did this event occur?
A)1.3 Ga ago
B)13.7 Ga ago
C)137 Ga ago
D)13.7 Ma ago

Question

Quizplus · Accepted Answer

Current scientific understanding suggests that the Big Bang occurred approximately 13.7 billion years (Ga) ago, and the subsequent expansion of the Universe began at the same time. Therefore, the best choice is B. The other choices are incorrect as they suggest the expansion occurred much later than the actual estimated time.

Researchers Have Determined That the Universe Began Expanding Subsequent to the Big