SCIENCE: Telecommunications expert suggests Earth may have dark matter disc. “Ben Harris, a telecommunications and GPS satellite expert with the University of Texas has made a surprising announcement during his presentation at this year’s gathering for the American Geophysical Union. He reported that using GPS data to calculate the mass of the Earth, gives a slightly bigger number than is accepted by the International Astronomical Union. The difference, he suggests, may be due to a disc of dark matter that exists over the equator.”