Assertion: matter's matter | /r/MadeOf | particle
Facets:
Source sentences:
text: Cosmologists speculate that the dark matter may be made of particles produced shortly after the Big Bang.
text: Physics tells us that matter is made of particles and fields, which have properties such as mass, charge, and spin.
text: Physics tells us that matter is made of particles and fields, which have properties such as mass, charge, and spin.