Assertion: dark matter | /r/MadeOf | exotic particle
Facets:
value: mostly
type: DEGREE
Source sentences:
text: One idea is, since it's not made of ordinary atoms, dark matter might be made of some exotic particle.
text: Dark matter may be made of exotic particles which have not yet been discovered.
text: The favored model is that dark matter is mostly composed of exotic particles formed when the universe was a fraction of a second old.