Assertion: universe's energy | /r/HasProperty | mysterious
Facets:
Source sentences:
text: The universe also contains a mysterious energy—possibly a scalar field—called dark energy, the density of which does not change over time.
text: Dark energy is the mysterious force that scientists think is driving the universe's current accelerating expansion.
text: Finally, torsion could be the source of "dark energy," a mysterious form of energy that permeates all of space and increases the rate of expansion of the universe.