noise

SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer), a NASA space observatory designed to explore the origin of the universe, galaxies, and water in planetary systems. Credit: NASA Jet Propulsion Laboratory, Public Domain, via Wikimedia Commons. The Cosmic Optical Background (COB) is the visible light emitted by all sources …

Could axion decay be the basis of excessive cosmic optical background noise? Read More »