![]() ![]() ![]() Put these three pieces of knowledge together, and one of the lessons we can derive from them is what the ultimate fate of the Universe will be. Recent measurements (in the last ~30 years) of distant supernovae and the large-scale structure of the Universe have enabled us to make this measurement to outstanding precision as of 2023. ![]() And you must be able to measure how the expansion rate has changed and evolved over time, or in other words, how the Universe was expanding at various points over its cosmic history.Although two different methods yield results that differ by about ~9% from one another, this difference, as well as the uncertainty we have about the “true value,” is still relatively small. ![]()
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