Dark Matter in the Universe
Knapp, G. R. / Kormendy, J.![Dark Matter in the Universe](https://support.digitalhusky.com/media/annotations/sorted/168/16809212/CHSBZCOP0316809212.jpg)
This is the first time that the International Astronomical Union has held a symposium on objects of totally unknown nature. In fact. M. Rees has pointed out that the mass of the individual particles that make up the dark matter is unknown to > 70 orders of magnitude. Since dark matter appears to make up ~ 90 % of the mass of the Universe. it presents us with one of the most fundamental problems in astrophysics. IAU Symposium 117 on Dark Matter...