Definitions
There is 1 meaning of the phrase
Dark Matter.
Dark Matter - as a noun
(cosmology) a hypothetical form of matter that is believed to make up 90 percent of the universe; it is invisible (does not absorb or emit light) and does not collide with atomic particles but exerts gravitational force
Example Sentences
"Scientists have been studying dark matter for decades."
"The presence of dark matter in the universe is believed to explain the behavior of galaxies."
"Detecting dark matter particles remains a significant challenge."
"The exact nature of dark matter is still a mystery."
"Scientists theorize that dark matter makes up a large portion of the universe's mass."
