The same is true for lots of games and especially those with loyal followings like Mass Effect and Dark Souls and and the big shooters with their outrageous map-packs.
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.
Given their abundance, neutrinos with even a minuscule mass would account for much or all of the so-called dark matter of the universe stuff that astronomers know is there because of its gravitational influence, but cannot actually see.