The term "cosmological decade" isn't an established scientific term, but it can refer to a period in cosmological research characterized by significant advancements or discoveries in our understanding of the universe. For instance, one might describe the period from the 2000s to the early 2010s as a cosmological decade due to breakthroughs in dark energy studies, the detection of exoplanets, and the further development of the Lambda Cold Dark Matter (ΛCDM) model of cosmology.
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