Astronomers use many methods to determine this number, including gravitational lensing, the universe’s expansion rate, and more.

A Rutgers-led team of scientists has uncovered evidence of how galaxies expand by tracing the invisible scaffolding of the ...

Most cosmologists believe that these stars were the first large, free-floating structures to illuminate our universe, and ...

Knowable Magazine reports that neutrinos may help explain the universe's missing antimatter, shedding light on ...

A neutrino sensor array, ARCA, lines the Mediterranean seafloor near Sicily. A physicist took ARCA’s first huge win to a warm ...