Assertion: dark matter | /r/PartOf | accounts
Facets:
value: for another 68.3 percent
type: TRANSITIVE-OBJECT
Source sentences:
text: Scientists believe that dark matter, which we have so far only detected through its gravity-based effects in space, makes up about a quarter (26.8 percent) of the total mass and energy of the universe, and something that is driving the universe’s accelerating expansion—which scientists call dark energy—accounts for another 68.3 percent.