Supermassive Black Holes Primordial Black Holes Early Universe Black Hole Mergers White Holes Black Hole Cosmology Black Hole Formation Exoplanets Einstein's Theory of Relativity Hawking Radiation Distant Black Holes Quasars Extreme Nuclear Transients Massive Black Hole Mergers Population III.1 Stars Massive Black Holes Ultramassive Black Holes Black Hole Stars Neutron Stars Tidal Disruption Events Formation Mechanisms Black Hole Jets Binary Systems
Spectra reveal light shaped by cold, dense gas that mimics stellar atmospheres.