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A mysterious quantity known as dark energy makes up nearly three-fourths of the universe, yet scientists are unsure not only what it is but how it operates. How, then, can they know this...
Late last Friday, on the first cloudy night in a week of clear weather, Dark Energy Survey science team member James Annis took time out from his role in the $35 million project’s...
A field that permeates the universe and gives rise to a new force, or "fifth force," between massive objects may be a candidate for dark energy and an explanation for why the expansion of...