DECam won't just help us gain a better understanding of dark energy, either.

ENGADGET: DECam: Gazing deep into the final frontier in search of dark energy

But for now, Will Percival from the University of Portsmouth, a Dark Energy Survey collaborator, said DECam is an exciting prospect.

BBC: Dark energy camera snaps first images ahead of survey

What is believed to be causing this increase in the speed of expansion is called dark energy, making up more than 70% of the mass-energy - all of the "stuff" - of the Universe and the focus of the DECam's mission.

BBC: Dark energy camera snaps first images ahead of survey