Excitons—bound pairs of electrons and an electron hole—are quasiparticles that can arise in solids. While so-called "bright" ...

This hidden matter has been mapped using FRBs, intense millisecond-long pulses from galaxies located far away. With the help of 70 FRBs, which included one from 9 billion light years away, the ...

Recent physics studies have found that light can sometimes flow in unexpected ways, behaving like a so-called "superfluid." ...