Enigma of Light in Our Universe –“Some of It Could Be Coming From an Unknown Exotic Source”


Space light

The Daily Galaxy – July 2, 2016

“The most exciting possibility is that the missing photons are coming from some exotic new source, not galaxies or quasars at all,” said Neal Katz of the University of Massachusetts at Amherst. “For example, the mysterious dark matter, which holds galaxies together but has never been seen directly, could itself decay and ultimately be responsible for this extra light. You know it’s a crisis when you start seriously talking about decaying dark matter!”

“It’s as if you’re in a big, brightly-lit room, but you look around and see only a few 40-watt light bulbs,” says Carnegie Institute’s Juna Kollmeier. “Where is all that light coming from? It’s missing from our census.”