There is strong evidence that most of the mass and energy dominating the
dynamics of the universe at the largest scales is not made of ordinary
matter, but is something new– “dark energy” and “dark matter.”
Understanding the dark sector poses fascinating challenges to
theoretical physicists. More excitingly, a slew of experiments ranging
from satellites to particle accelerators to deep-underground detectors
are poised to shed a great deal of light on this subject in the very
near future. In this talk I will describe these developments, and
explore what we might learn about the dark universe in the next five
years.
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