Measurements of extremely distant gas halos and galaxies indicate the baryonic matter present when the universe was only a few billion years old represented about one - sixth the mass and density of
the existing unobservable, or dark, matter.
Not exact matches
Atheists will accept the potential existence of black holes since they can be empirically proven to
exist, even though they are directly
unobservable.
If the omnivision assumption is false, then there are
unobservable things that
exist and we live in a multiverse.