Dark Energy and Supernova Brightness

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Reference no: EM133210293

Question 1.

Dark Energy and Supernova Brightness. When astronomers began measuring the brightness and redshifts of distant white dwarf supernovae, they expected to find that the expansion of the universe was slowing down.

Question 2.

Instead they found that it was speeding up. Were the distant supernovae brighter or fainter than expected? Explain why. (Hint: In the figure below, the position of a supernova point on the vertical axis depends on its redshift. Its position on the horizontal axis depends on its brightness -supernovae seen further back in time are not as bright as those seen closer in time.)

Reference no: EM133210293

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