The current cosmological paradigm, \ (CDM\), is characterized its expansive description of the history of the Universe, its deep connections to particle physics and the large amounts of data that support it. Nonetheless, \ (CDM\) ’s critics and boosters alike agree on one thing: it is the not the final cosmological theory and they are anxious to see it replaced by something better! However, given its successes and the absence of a worthy competitor, this replacement is not likely to happen soon. Nonetheless, after reviewing the impactful events in cosmology since the last Lemaître Workshop, I discuss the role that the recent evidence for evolving dark energy might play in getting cosmology to that better theory.
Michael S. Turner (Sun,) studied this question.