Unveiling the Dark-Matter Universe –“Tracers from the First Galaxies”

Lost Hubble Frontier Image


The universe, perhaps surprisingly, is not comprised of galaxies randomly distributed throughout space; that is, it is not very homogeneous. Instead, its galaxies are clustered into distinct structures that harbor dark matter, typically gigantic filaments separated by vast voids—the “large-scale structure (LSS),” an architecture whose discovery and mappings were pioneered by Harvard-Smithsonian Center for Astrophysics astronomers about thirty years ago.


“Self-Regulating Objects” –Powerful ‘Wind of Molecules’ Detected in a Galaxy 12 billion Light-Years Away


“Galaxies are complicated, messy beasts, and we think outflows and winds are critical pieces to how they form and evolve, regulating their ability to grow,” said astronomer Justin Spilker at the University of Texas.