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The Dark Energy Survey, which has just begun its second year of observations, is gathering data about one of the most puzzling phenomena to be discovered in the past century: that the universe is not only expanding, but is doing so at an ever faster rate. Some as yet unknown force dubbed ‘dark energy’ is driving this acceleration.

On 15th August, with its successful first season behind it, the Dark Energy Survey (DES) collaboration, which includes over a dozen researchers from Physics & Astronomy’s Astrophysics Group, began its second year of mapping the southern sky in unprecedented detail.

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Image

• NGC 1398 galaxy taken with the Dark Energy Camera (credit: Dark Energy Survey)