Cosmological data suggest unexpected masses for neutrinos, including the possibility of zero or negative mass.

Cosmology scientists at the Lawrence Berkeley National Laboratory have made a rare discovery: a cluster of galaxies that span ...

The largest known black hole jets, 23 million light years across, have been discovered in the distant universe. This pair of ...

Nearly imperceptible quantum flickers used to limit how precisely we could detect the way space-time ripples, but squeezing ...