Modern observations have shown that the geometry of the Universe is ____.
A) flat, and the Universe must be infinite
B) flat, and the Universe must not be infinite
C) open, and the Universe must be infinite
D) closed, and the Universe must be infinite
E) closed, and the Universe must not be infinite

Question

Quizplus · Accepted Answer

Modern observations, particularly those related to the cosmic microwave background radiation, suggest that the Universe is flat with a total density very close to the critical density. This implies that the geometry of the Universe is flat, and it could be infinite, although the infinity of the Universe is not a direct consequence of its flat geometry but rather a common interpretation.

Modern Observations Have Shown That the Geometry of the Universe