Kasper E. Heintz

In a distant galaxy, almost all light comes not from stars, but from clouds of hot gas. This discovery helps understand what the Universe looked like shortly after the Big Bang. Perhaps the gas is heated by remnants of the first stars, which consisted only of hydrogen and helium. This explains why t

A study of rare quasars with powerful outflows and anomalously weak emission lines has shown that these objects are in a transitional phase of 'blowing off' their dust cocoons. Using spectroscopy and polarimetry, outflow velocities of up to 0.16c were measured, and a predominance of tiny dust grains