Half of the universe's hydrogen gas, long unaccounted for, has been found (phys.org)
Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short of the total matter produced in the Big Bang 13.6 billion years ago.
Cosmology, Astronomy, Physics, Missing Matter
12 points by PaulHoule 2 days ago | 1 comments