Waiting for answer This question has not been answered yet. You can hire a professional tutor to get the answer.
Measurement of the sizes of hot spots in the temperature distribution of the cosmic microwave background suggests that the universe is flat.
Measurement of the sizes of hot spots in the temperature distribution of the cosmic microwave background suggests that the universe is flat. Yet the combined density of all the matter and energy we see, plus the dark matter we infer, is only about a quarter of the critical density. What conclusion have we drawn from this discrepancy?